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<h1>Microcode </h1> </div>
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<div class="contents">
<p>The listing below represents the microcode. It is taken from <code>./sw/ao68000_tool/Microcode.java</code>. More information about the microcode structure and compilation is available at <a class="el" href="page_microcode_compilation.html">Microcode compilation</a>.</p>
<div class="fragment"><pre class="fragment"><span class="comment">/*</span>
<span class="comment"> * Copyright 2010, Aleksander Osman, alfik@poczta.fm. All rights reserved.</span>
<span class="comment"> *</span>
<span class="comment"> * Redistribution and use in source and binary forms, with or without modification, are</span>
<span class="comment"> * permitted provided that the following conditions are met:</span>
<span class="comment"> *</span>
<span class="comment"> * 1. Redistributions of source code must retain the above copyright notice, this list of</span>
<span class="comment"> * conditions and the following disclaimer.</span>
<span class="comment"> *</span>
<span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright notice, this list</span>
<span class="comment"> * of conditions and the following disclaimer in the documentation and/or other materials</span>
<span class="comment"> * provided with the distribution.</span>
<span class="comment"> *</span>
<span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED</span>
<span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND</span>
<span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR</span>
<span class="comment"> * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR</span>
<span class="comment"> * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR</span>
<span class="comment"> * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON</span>
<span class="comment"> * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING</span>
<span class="comment"> * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF</span>
<span class="comment"> * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<span class="comment"> */</span>
<span class="keyword">package </span>ao68000_tool;
<span class="keyword">public</span> <span class="keyword">class </span>Microcode {
<span class="keyword">static</span> <span class="keywordtype">void</span> microcode(Parser p) <span class="keywordflow">throws</span> Exception {
p.label(<span class="stringliteral">"reset"</span>);
p .GROUP_0_FLAG_SET();
<span class="comment">// wait for instruction prefetch</span>
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
<span class="comment">// move SSP and PC from prefetch</span>
p .AN_INPUT_FROM_PREFETCH_IR().AN_ADDRESS_SSP().AN_WRITE_ENABLE_SET()
.PC_FROM_PREFETCH_IR()
<span class="comment">// jump to main loop</span>
.BRANCH_procedure().PROCEDURE_jump_to_main_loop();
p.label(<span class="stringliteral">"MICROPC_ADDRESS_BUS_TRAP"</span>);
<span class="comment">// save trap number and bus cycle extended information</span>
p .TRAP_FROM_INTERRUPT()
.OP2_MOVE_ADDRESS_BUS_INFO()
<span class="comment">// clear internal flags</span>
.READ_MODIFY_WRITE_FLAG_CLEAR()
.INSTRUCTION_FLAG_SET()
.DO_READ_FLAG_CLEAR()
.DO_WRITE_FLAG_CLEAR()
.DO_INTERRUPT_FLAG_CLEAR()
<span class="comment">// check if group_0_flag already active</span>
.BRANCH_group_0_flag().offset(<span class="stringliteral">"address_bus_trap_group_0_flag_cleared"</span>);
<span class="comment">// if group_0_flag active: block processor</span>
p .DO_BLOCKED_FLAG_SET()
.BRANCH_procedure()
.PROCEDURE_wait_finished();
<span class="comment">// continue processing trap</span>
p .label(<span class="stringliteral">"address_bus_trap_group_0_flag_cleared"</span>);
p .GROUP_0_FLAG_SET();
<span class="comment">//--</span>
<span class="comment">// move PC to OP1</span>
p .OP1_FROM_PC();
<span class="comment">// move OP1 to result</span>
p .ALU_SIMPLE_MOVE()
<span class="comment">// move SR to OP1</span>
.OP1_FROM_SR();
<span class="comment">// set supervisor, clear trace</span>
p .ALU_SR_SET_TRAP();
<span class="comment">//--</span>
<span class="comment">// stack PC</span>
p .SIZE_LONG().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_call_save_ea()
<span class="comment">// move SR to result</span>
.ALU_SIMPLE_MOVE()
<span class="comment">// move IR to OP1</span>
.OP1_FROM_IR();
<span class="comment">// stack SR</span>
p .SIZE_WORD().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_call_save_ea()
<span class="comment">// move IR to result</span>
.ALU_SIMPLE_MOVE()
<span class="comment">// move fault address to OP1</span>
.OP1_FROM_FAULT_ADDRESS();
<span class="comment">//--</span>
<span class="comment">// stack IR</span>
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_call_save_ea()
<span class="comment">// move fault address to result</span>
.ALU_SIMPLE_MOVE()
<span class="comment">// move bus cycle info stored in OP2 to OP1</span>
.OP1_FROM_OP2();
<span class="comment">// stack fault address</span>
p .SIZE_LONG().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_call_save_ea()
<span class="comment">// move bus cycle info from OP1 to result</span>
.ALU_SIMPLE_MOVE();
<span class="comment">// stack bus cycle info</span>
p .SIZE_WORD().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
<span class="comment">//--</span>
<span class="comment">// load PC from exception vector table</span>
p .ADDRESS_FROM_TRAP()
.SIZE_LONG().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_SIMPLE_MOVE();
<span class="comment">// wait for instruction prefetch</span>
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .PC_FROM_RESULT();
<span class="comment">// wait one cycle to check loaded PC: is it even ?</span>
p .OP1_FROM_OP2();
<span class="comment">//--</span>
<span class="comment">// jump to main loop</span>
p .BRANCH_procedure().PROCEDURE_jump_to_main_loop();
p.label(<span class="stringliteral">"MICROPC_TRAP_ENTRY"</span>);
<span class="comment">//--</span>
<span class="comment">// move PC to OP1</span>
p .OP1_FROM_PC();
<span class="comment">// move OP1 to result</span>
p .ALU_SIMPLE_MOVE()
<span class="comment">// move SR to OP1</span>
.OP1_FROM_SR();
<span class="comment">// set supervisor, clear trace</span>
p .ALU_SR_SET_TRAP();
<span class="comment">//--</span>
<span class="comment">// stack PC</span>
p .SIZE_LONG().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_call_save_ea()
<span class="comment">// move SR to result</span>
.ALU_SIMPLE_MOVE();
<span class="comment">// stack SR</span>
p .SIZE_WORD().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
<span class="comment">//--</span>
<span class="comment">// load PC from exception vector table</span>
p .ADDRESS_FROM_TRAP()
.SIZE_LONG().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_SIMPLE_MOVE();
<span class="comment">// wait for instruction prefetch</span>
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .PC_FROM_RESULT();
<span class="comment">// wait one cycle to check loaded PC: is it even ?</span>
p .OP1_FROM_OP2();
<span class="comment">//--</span>
<span class="comment">// return</span>
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_MAIN_LOOP"</span>);
<span class="comment">// check if stop flag set and wait for valid prefetch and decode instruction</span>
<span class="comment">// execute instruction, instruction generated trap possible</span>
p .BRANCH_stop_flag_wait_ir_decode().offset(<span class="stringliteral">"main_loop_after_execution"</span>)
<span class="comment">// clear read-modify-write flag always</span>
.READ_MODIFY_WRITE_FLAG_CLEAR()
<span class="comment">// save trace flag, only when valid prefetch and valid instruction and stop flag cleared</span>
.TRACE_FLAG_COPY_WHEN_NO_STOP()
<span class="comment">// save first instruction word, only when prefetch valid and stop flag cleared</span>
.IR_LOAD_WHEN_PREFETCH_VALID()
<span class="comment">// clear group 0 flag, only when valid prefetch and stop flag cleared</span>
.GROUP_0_FLAG_CLEAR_WHEN_VALID_PREFETCH()
<span class="comment">// increment PC by 2, only when valid prefetch and valid instruction and stop flag cleared</span>
.PC_INCR_BY_2_IN_MAIN_LOOP()
<span class="comment">// clear instruction flag, only when valid prefetch and valid instruction and stop flag cleared</span>
.INSTRUCTION_FLAG_CLEAR_IN_MAIN_LOOP();
<span class="comment">// call trap</span>
p .TRAP_FROM_DECODER()
.INSTRUCTION_FLAG_SET()
.BRANCH_procedure().PROCEDURE_call_trap();
<span class="comment">// after trap jump to main loop</span>
p .BRANCH_procedure().PROCEDURE_jump_to_main_loop();
<span class="comment">// jump here after execution</span>
p .label(<span class="stringliteral">"main_loop_after_execution"</span>);
<span class="comment">// check if trace flag set and check external interrupt</span>
p .BRANCH_trace_flag_and_interrupt().offset(<span class="stringliteral">"main_loop_interrupt"</span>)
<span class="comment">// set instruction flag, always</span>
.INSTRUCTION_FLAG_SET();
<span class="comment">// call trap</span>
p .TRAP_TRACE()
.STOP_FLAG_CLEAR()
.BRANCH_procedure().PROCEDURE_call_trap();
<span class="comment">// after trap continue</span>
<span class="comment">// jump here if trace flag not set and interupt pending</span>
p .label(<span class="stringliteral">"main_loop_interrupt"</span>);
<span class="comment">// check external interrupt</span>
p .DO_INTERRUPT_FLAG_SET_IF_ACTIVE()
.BRANCH_procedure().PROCEDURE_interrupt_mask();
p .BRANCH_procedure().PROCEDURE_wait_finished()
.ALU_SR_SET_INTERRUPT();
p .DO_INTERRUPT_FLAG_CLEAR()
.TRAP_FROM_INTERRUPT()
.STOP_FLAG_CLEAR()
.BRANCH_procedure().PROCEDURE_call_trap();
<span class="comment">// after trap jump to main loop</span>
p .BRANCH_procedure().PROCEDURE_jump_to_main_loop();
<span class="comment">// **************************************************************** EA</span>
<span class="comment">// load ea: to address register</span>
<span class="comment">// (An), (An)+:</span>
p.label(<span class="stringliteral">"MICROPC_LOAD_EA_An"</span>);
p.label(<span class="stringliteral">"MICROPC_LOAD_EA_An_plus"</span>);
p .ADDRESS_FROM_AN_OUTPUT()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// -(An):</span>
p.label(<span class="stringliteral">"MICROPC_LOAD_EA_minus_An"</span>);
p .ADDRESS_FROM_AN_OUTPUT();
p .ADDRESS_DECR_BY_SIZE()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// (d16, An):</span>
p.label(<span class="stringliteral">"MICROPC_LOAD_EA_d16_An"</span>);
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .INDEX_0()
.OFFSET_IMM_16()
.PC_INCR_BY_2()
.ADDRESS_FROM_AN_OUTPUT();
p .ADDRESS_FROM_BASE_INDEX_OFFSET()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// (d8, An, Xn):</span>
p.label(<span class="stringliteral">"MICROPC_LOAD_EA_d8_An_Xn"</span>);
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid()
.ADDRESS_FROM_AN_OUTPUT();
p .AN_ADDRESS_FROM_EXTENDED()
.DN_ADDRESS_FROM_EXTENDED()
.OFFSET_IMM_8();
p .AN_ADDRESS_FROM_EXTENDED()
.INDEX_LOAD_EXTENDED()
.PC_INCR_BY_2();
p .ADDRESS_FROM_BASE_INDEX_OFFSET()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// (xxx).W:</span>
p.label(<span class="stringliteral">"MICROPC_LOAD_EA_xxx_W"</span>);
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .ADDRESS_FROM_IMM_16()
.PC_INCR_BY_2()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// (xxx).L:</span>
p.label(<span class="stringliteral">"MICROPC_LOAD_EA_xxx_L"</span>);
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .ADDRESS_FROM_IMM_32()
.PC_INCR_BY_4()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// (d16, PC):</span>
p.label(<span class="stringliteral">"MICROPC_LOAD_EA_d16_PC"</span>);
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .INDEX_0()
.OFFSET_IMM_16();
p .ADDRESS_FROM_PC_INDEX_OFFSET()
.PC_INCR_BY_2()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// (d8, PC, Xn):</span>
p.label(<span class="stringliteral">"MICROPC_LOAD_EA_d8_PC_Xn"</span>);
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .AN_ADDRESS_FROM_EXTENDED()
.DN_ADDRESS_FROM_EXTENDED()
.OFFSET_IMM_8();
p .AN_ADDRESS_FROM_EXTENDED()
.INDEX_LOAD_EXTENDED();
p .ADDRESS_FROM_PC_INDEX_OFFSET()
.PC_INCR_BY_2()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_LOAD_EA_illegal_command"</span>);
<span class="comment">// call trap</span>
p .TRAP_ILLEGAL_INSTR()
.BRANCH_procedure().PROCEDURE_call_trap();
<span class="comment">// after trap jump to main loop</span>
p .BRANCH_procedure().PROCEDURE_jump_to_main_loop();
<span class="comment">// perform_ea_read: memory, Dn,An,immediate</span>
<span class="comment">// Dn:</span>
p.label(<span class="stringliteral">"MICROPC_PERFORM_EA_READ_Dn"</span>);
p .OP1_FROM_DN()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// An:</span>
p.label(<span class="stringliteral">"MICROPC_PERFORM_EA_READ_An"</span>);
p .OP1_FROM_AN()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// immediate</span>
p.label(<span class="stringliteral">"MICROPC_PERFORM_EA_READ_imm"</span>);
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// memory</span>
p.label(<span class="stringliteral">"MICROPC_PERFORM_EA_READ_memory"</span>);
p .DO_READ_FLAG_SET()
.BRANCH_procedure().PROCEDURE_wait_finished();
p .DO_READ_FLAG_CLEAR()
.OP1_FROM_DATA()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// perform ea write: memory, Dn,An</span>
<span class="comment">// size of operand matters: select in memory write</span>
<span class="comment">// Dn:</span>
p.label(<span class="stringliteral">"MICROPC_PERFORM_EA_WRITE_Dn"</span>);
p .DN_WRITE_ENABLE_SET()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// An:</span>
p.label(<span class="stringliteral">"MICROPC_PERFORM_EA_WRITE_An"</span>);
p .AN_WRITE_ENABLE_SET()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// memory:</span>
p.label(<span class="stringliteral">"MICROPC_PERFORM_EA_WRITE_memory"</span>);
p .DATA_WRITE_FROM_RESULT()
.DO_WRITE_FLAG_SET()
.BRANCH_procedure().PROCEDURE_wait_finished();
p .DO_WRITE_FLAG_CLEAR()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// save ea: (An)+,-(An)</span>
<span class="comment">// (An)+:</span>
p.label(<span class="stringliteral">"MICROPC_SAVE_EA_An_plus"</span>);
p .ADDRESS_INCR_BY_SIZE();
p .AN_INPUT_FROM_ADDRESS()
.AN_WRITE_ENABLE_SET()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// -(An)</span>
p.label(<span class="stringliteral">"MICROPC_SAVE_EA_minus_An"</span>);
p .AN_INPUT_FROM_ADDRESS()
.AN_WRITE_ENABLE_SET()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// **************************************************************** Instructions</span>
p.label(<span class="stringliteral">"MICROPC_MOVEP_memory_to_register"</span>);
p .SIZE_BYTE().EA_REG_IR_2_0().EA_MOD_INDIRECTOFFSET().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .ALU_MOVEP_M2R_1()
.ADDRESS_INCR_BY_2()
.BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_MOVEP_M2R_2()
.ADDRESS_INCR_BY_2()
.BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_MOVEP_M2R_3()
.ADDRESS_INCR_BY_2()
.BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_MOVEP_M2R_4()
.SIZE_1().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_MOVEP_register_to_memory"</span>);
p .SIZE_1_PLUS().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .SIZE_BYTE().EA_REG_IR_2_0().EA_MOD_INDIRECTOFFSET().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .ALU_MOVEP_R2M_1()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .ADDRESS_INCR_BY_2()
.ALU_MOVEP_R2M_2()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_movep_16().offset(<span class="stringliteral">"movep_16"</span>);
p .ADDRESS_INCR_BY_2()
.ALU_MOVEP_R2M_3()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .ADDRESS_INCR_BY_2()
.ALU_MOVEP_R2M_4()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
<span class="comment">// jump here if word operation</span>
p .label(<span class="stringliteral">"movep_16"</span>);
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_MOVEM_memory_to_register"</span>);
p .SIZE_WORD().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE();
p .MOVEM_REG_FROM_OP1()
.MOVEM_MODREG_LOAD_0()
.MOVEM_LOOP_LOAD_0()
.SIZE_2().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_CONTROL_POSTINC();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
<span class="comment">// push current micro pc on stack</span>
p .BRANCH_procedure().PROCEDURE_push_micropc();
<span class="comment">// check if loop finished</span>
p .BRANCH_movem_loop().offset(<span class="stringliteral">"movem_memory_to_register_loop"</span>);
<span class="comment">// check if operation on register required</span>
p .BRANCH_movem_reg().offset(<span class="stringliteral">"movem_memory_to_register_reg"</span>);
p .SIZE_2().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_CONTROL_POSTINC();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_SIGN_EXTEND()
.ADDRESS_INCR_BY_SIZE()
.SIZE_LONG().EA_REG_MOVEM_REG_2_0().EA_MOD_MOVEM_MOD_5_3().EA_TYPE_DN_AN();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
<span class="comment">// jump here if operation on register not required</span>
p .label(<span class="stringliteral">"movem_memory_to_register_reg"</span>);
p .MOVEM_MODREG_INCR_BY_1()
.MOVEM_REG_SHIFT_RIGHT()
.MOVEM_LOOP_INCR_BY_1()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// jump here if loop finished</span>
p .label(<span class="stringliteral">"movem_memory_to_register_loop"</span>);
p .BRANCH_procedure().PROCEDURE_pop_micropc()
.SIZE_2().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_CONTROL_POSTINC();
p .BRANCH_procedure().PROCEDURE_call_save_ea()
.ADDRESS_DECR_BY_SIZE();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_MOVEM_register_to_memory_predecrement"</span>);
p .SIZE_WORD().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE();
p .MOVEM_REG_FROM_OP1()
.MOVEM_MODREG_LOAD_6b001111()
.MOVEM_LOOP_LOAD_0()
.SIZE_2().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_CONTROLALTER_PREDEC();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
<span class="comment">// push current micro pc on stack</span>
p .BRANCH_procedure().PROCEDURE_push_micropc();
<span class="comment">// check if loop finished</span>
p .BRANCH_movem_loop().offset(<span class="stringliteral">"movem_register_to_memory_predecrement_loop"</span>);
<span class="comment">// check if operation on register required</span>
p .BRANCH_movem_reg().offset(<span class="stringliteral">"movem_register_to_memory_predecrement_reg"</span>);
p .SIZE_2().EA_REG_MOVEM_REG_2_0().EA_MOD_MOVEM_MOD_5_3().EA_TYPE_DN_AN();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_SIGN_EXTEND()
.SIZE_2().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_CONTROLALTER_PREDEC();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .ADDRESS_DECR_BY_SIZE();
<span class="comment">// jump here if operation on register not required</span>
p .label(<span class="stringliteral">"movem_register_to_memory_predecrement_reg"</span>);
p .MOVEM_MODREG_DECR_BY_1()
.MOVEM_REG_SHIFT_RIGHT()
.MOVEM_LOOP_INCR_BY_1()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// jump here if loop finished</span>
p .label(<span class="stringliteral">"movem_register_to_memory_predecrement_loop"</span>);
p .BRANCH_procedure().PROCEDURE_pop_micropc()
.ADDRESS_INCR_BY_SIZE();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_MOVEM_register_to_memory_control"</span>);
p .SIZE_WORD().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE();
p .MOVEM_REG_FROM_OP1()
.MOVEM_MODREG_LOAD_0()
.MOVEM_LOOP_LOAD_0()
.SIZE_2().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_CONTROLALTER_PREDEC();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
<span class="comment">// push current micro pc on stack</span>
p .BRANCH_procedure().PROCEDURE_push_micropc();
<span class="comment">// check if loop finished</span>
p .BRANCH_movem_loop().offset(<span class="stringliteral">"movem_register_to_memory_control_loop"</span>);
<span class="comment">// check if operation on register required</span>
p .BRANCH_movem_reg().offset(<span class="stringliteral">"movem_register_to_memory_control_reg"</span>);
p .SIZE_2().EA_REG_MOVEM_REG_2_0().EA_MOD_MOVEM_MOD_5_3().EA_TYPE_DN_AN();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_SIGN_EXTEND()
.SIZE_2().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_CONTROLALTER_PREDEC();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .ADDRESS_INCR_BY_SIZE();
<span class="comment">// jump here if operation on register not required</span>
p .label(<span class="stringliteral">"movem_register_to_memory_control_reg"</span>);
p .MOVEM_MODREG_INCR_BY_1()
.MOVEM_REG_SHIFT_RIGHT()
.MOVEM_LOOP_INCR_BY_1()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// jump here if loop finished</span>
p .label(<span class="stringliteral">"movem_register_to_memory_control_loop"</span>);
p .BRANCH_procedure().PROCEDURE_pop_micropc();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_LEA"</span>);
p .SIZE_LONG().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_CONTROL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .OP1_FROM_ADDRESS();
p .ALU_SIMPLE_MOVE()
.SIZE_LONG().EA_REG_IR_11_9().EA_MOD_AN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_PEA"</span>);
p .SIZE_LONG().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_CONTROL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .OP1_FROM_ADDRESS();
p .ALU_SIMPLE_MOVE()
.SIZE_LONG().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_ANDI_EORI_ORI_ADDI_SUBI"</span>);
<span class="comment">//+++</span>
p .SIZE_3().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE()
.SIZE_3().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATAALTER();
p .OP2_FROM_OP1()
.BRANCH_procedure().PROCEDURE_call_read();
p .ALU_ARITHMETIC_LOGIC()
.BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_ORI_to_CCR_ORI_to_SR_ANDI_to_CCR_ANDI_to_SR_EORI_to_CCR_EORI_to_SR"</span>);
<span class="comment">//+</span>
p .SIZE_3().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE();
p .OP2_FROM_OP1()
.OP1_FROM_SR();
p .ALU_ARITHMETIC_LOGIC();
p .OP1_FROM_RESULT();
p .ALU_MOVE_TO_CCR_SR_RTE_RTR_STOP_LOGIC_TO_CCR_SR()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_CMPI"</span>);
<span class="comment">//+</span>
p .SIZE_3().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE()
.SIZE_3().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATAALTER();
p .OP2_FROM_OP1()
.BRANCH_procedure().PROCEDURE_call_read();
p .ALU_ARITHMETIC_LOGIC()
.BRANCH_procedure().PROCEDURE_call_save_ea();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_ABCD_SBCD_ADDX_SUBX"</span>);
p .SIZE_3().EA_REG_IR_2_0().EA_MOD_DN_PREDEC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .OP2_FROM_OP1()
.SIZE_3().EA_REG_IR_11_9().EA_MOD_DN_PREDEC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_ABCD_SBCD_ADDX_SUBX()
.BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_EXG"</span>);
p .SIZE_LONG().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DN_AN();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_SIMPLE_MOVE()
.SIZE_LONG().EA_REG_IR_11_9().EA_MOD_DN_AN_EXG().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .ALU_SIMPLE_MOVE()
.SIZE_LONG().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DN_AN();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_CMPM"</span>);
p .SIZE_3().EA_REG_IR_2_0().EA_MOD_POSTINC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .OP2_FROM_OP1()
.SIZE_3().EA_REG_IR_11_9().EA_MOD_POSTINC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .ALU_ARITHMETIC_LOGIC()
.BRANCH_procedure().PROCEDURE_call_save_ea();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_ASL_LSL_ROL_ROXL_ASR_LSR_ROR_ROXR_all_immediate_register"</span>);
p .SIZE_3().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .OP2_FROM_OP1()
.SIZE_3().EA_REG_IR_2_0().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .OP2_LOAD_COUNT();
p .ALU_ASL_LSL_ROL_ROXL_ASR_LSR_ROR_ROXR_prepare();
p .BRANCH_procedure().PROCEDURE_push_micropc();
p .BRANCH_operand2().offset(<span class="stringliteral">"shift_rotate_immediate_loop"</span>);
p .ALU_ASL_LSL_ROL_ROXL_ASR_LSR_ROR_ROXR();
p .OP1_FROM_RESULT()
.OP2_DECR_BY_1()
.BRANCH_procedure().PROCEDURE_return();
<span class="comment">// jump here if loop finished</span>
p .label(<span class="stringliteral">"shift_rotate_immediate_loop"</span>);
p .BRANCH_procedure().PROCEDURE_pop_micropc();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_ASL_LSL_ROL_ROXL_ASR_LSR_ROR_ROXR_all_memory"</span>);
p .SIZE_WORD().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_MEMORYALTER();
p .BRANCH_procedure().PROCEDURE_call_read();
p .OP2_LOAD_1();
p .ALU_ASL_LSL_ROL_ROXL_ASR_LSR_ROR_ROXR_prepare();
p .ALU_ASL_LSL_ROL_ROXL_ASR_LSR_ROR_ROXR();
p .BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_MOVE"</span>);
p .SIZE_4().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .ALU_SIMPLE_MOVE()
.SIZE_4().EA_REG_IR_11_9().EA_MOD_IR_8_6().EA_TYPE_DATAALTER();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .ALU_MOVE()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_MOVEA"</span>);
p .SIZE_4().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .ALU_SIGN_EXTEND()
.SIZE_4().EA_REG_IR_11_9().EA_MOD_AN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_EOR"</span>);
p .SIZE_3().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .OP2_FROM_OP1()
.SIZE_3().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATAALTER();
p .BRANCH_procedure().PROCEDURE_call_read();
p .ALU_ARITHMETIC_LOGIC()
.BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_ADD_to_mem_SUB_to_mem_AND_to_mem_OR_to_mem"</span>);
p .SIZE_3().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .OP2_FROM_OP1()
.SIZE_3().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_MEMORYALTER();
p .BRANCH_procedure().PROCEDURE_call_read();
p .ALU_ARITHMETIC_LOGIC()
.BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_ADD_to_Dn_SUB_to_Dn_AND_to_Dn_OR_to_Dn"</span>);
p .SIZE_3().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .OP2_FROM_OP1()
.SIZE_3().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_ARITHMETIC_LOGIC()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_CMP"</span>);
p .SIZE_3().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .OP2_FROM_OP1()
.SIZE_3().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_ARITHMETIC_LOGIC()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_ADDA_SUBA"</span>);
p .SIZE_5().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .OP2_FROM_OP1()
.SIZE_LONG().EA_REG_IR_11_9().EA_MOD_AN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_ADDA_SUBA_CMPA_ADDQ_SUBQ()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_CMPA"</span>);
p .SIZE_5().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .OP2_FROM_OP1()
.SIZE_LONG().EA_REG_IR_11_9().EA_MOD_AN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_ADDA_SUBA_CMPA_ADDQ_SUBQ()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_CHK"</span>);
p .SIZE_WORD().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATA();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .OP2_FROM_OP1()
.SIZE_WORD().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_CHK();
p .BRANCH_alu_signal().offset(<span class="stringliteral">"chk_no_trap"</span>);
p .TRAP_CHK()
.BRANCH_procedure().PROCEDURE_call_trap();
<span class="comment">// after return continue</span>
<span class="comment">// jump here if no trap</span>
p .label(<span class="stringliteral">"chk_no_trap"</span>);
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_MULS_MULU_DIVS_DIVU"</span>);
p .SIZE_WORD().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATA();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .OP2_FROM_OP1()
.SIZE_LONG().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_MULS_MULU_DIVS_DIVU();
p .BRANCH_alu_signal().offset(<span class="stringliteral">"div_no_div_by_zero_trap"</span>);
p .TRAP_DIV_BY_ZERO()
.BRANCH_procedure().PROCEDURE_call_trap();
<span class="comment">// return after return</span>
p .BRANCH_procedure().PROCEDURE_return();
<span class="comment">// jump here if no trap</span>
p .label(<span class="stringliteral">"div_no_div_by_zero_trap"</span>);
<span class="comment">// push current micro pc on stack</span>
p .BRANCH_procedure().PROCEDURE_push_micropc();
<span class="comment">// check if operation finished</span>
p .BRANCH_alu_mult_div_ready().offset(<span class="stringliteral">"mult_div_loop"</span>);
p .BRANCH_procedure().PROCEDURE_return();
<span class="comment">// jump here after first loop finished</span>
p .label(<span class="stringliteral">"mult_div_loop"</span>);
p .ALU_MULS_MULU_DIVS_DIVU()
.BRANCH_procedure().PROCEDURE_pop_micropc();
p .BRANCH_alu_signal().offset(<span class="stringliteral">"mult_div_no_overflow"</span>);
p .BRANCH_procedure().PROCEDURE_return();
<span class="comment">// jump here if overflow</span>
p .label(<span class="stringliteral">"mult_div_no_overflow"</span>);
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_MOVEQ"</span>);
p .OP1_MOVEQ()
.SIZE_LONG().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .ALU_MOVE()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_BCHG_BCLR_BSET_immediate"</span>);
p .SIZE_BYTE().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE();
p .OP2_FROM_OP1()
.SIZE_6().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATAALTER();
p .BRANCH_procedure().PROCEDURE_call_read();
p .ALU_BCHG_BCLR_BSET_BTST()
.BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_BTST_immediate"</span>);
p .SIZE_BYTE().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE();
p .OP2_FROM_OP1()
.SIZE_6().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATA();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .ALU_BCHG_BCLR_BSET_BTST()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_BCHG_BCLR_BSET_register"</span>);
p .SIZE_6().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .OP2_FROM_OP1()
.SIZE_6().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATAALTER();
p .BRANCH_procedure().PROCEDURE_call_read();
p .ALU_BCHG_BCLR_BSET_BTST()
.BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_BTST_register"</span>);
p .SIZE_6().EA_REG_IR_11_9().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .OP2_FROM_OP1()
.SIZE_6().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATA();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .ALU_BCHG_BCLR_BSET_BTST()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_TAS"</span>);
p .READ_MODIFY_WRITE_FLAG_SET()
.SIZE_BYTE().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATAALTER();
p .BRANCH_procedure().PROCEDURE_call_read();
p .ALU_TAS()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .READ_MODIFY_WRITE_FLAG_CLEAR()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_NEGX_CLR_NEG_NOT_NBCD"</span>);
p .SIZE_3().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATAALTER();
p .BRANCH_procedure().PROCEDURE_call_read();
p .ALU_NEGX_CLR_NEG_NOT_NBCD_SWAP_EXT()
.BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_SWAP_EXT"</span>);
p .SIZE_2().EA_REG_IR_2_0().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_NEGX_CLR_NEG_NOT_NBCD_SWAP_EXT()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_TST"</span>);
p .SIZE_3().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATAALTER();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .ALU_MOVE()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_ADDQ_SUBQ_not_An"</span>);
p .OP2_ADDQ_SUBQ()
.SIZE_3().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATAALTER();
p .BRANCH_procedure().PROCEDURE_call_read();
p .ALU_ARITHMETIC_LOGIC()
.BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_ADDQ_SUBQ_An"</span>);
p .OP2_ADDQ_SUBQ()
.SIZE_LONG().EA_REG_IR_2_0().EA_MOD_AN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_ADDA_SUBA_CMPA_ADDQ_SUBQ()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_Scc"</span>);
p .BRANCH_condition_0().offset(<span class="stringliteral">"scc_condition_0"</span>);
p .OP1_LOAD_ONES();
<span class="comment">// jump here if condition is false</span>
p .label(<span class="stringliteral">"scc_condition_0"</span>);
p .BRANCH_condition_1().offset(<span class="stringliteral">"scc_condition_1"</span>);
p .OP1_LOAD_ZEROS();
<span class="comment">// jump here if condition is true</span>
p .label(<span class="stringliteral">"scc_condition_1"</span>);
p .ALU_SIMPLE_MOVE()
.SIZE_BYTE().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATAALTER();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_Bcc_BRA"</span>);
p .OP1_FROM_PC();
p .ALU_SIMPLE_MOVE()
.BRANCH_ir().offset(<span class="stringliteral">"bcc_bra_no_word"</span>);
p .SIZE_WORD().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE();
<span class="comment">// jump here if no need to load extra immediate word</span>
p .label(<span class="stringliteral">"bcc_bra_no_word"</span>);
p .BRANCH_condition_0().offset(<span class="stringliteral">"bcc_bra_no_branch"</span>);
p .OP2_FROM_OP1();
p .OP2_MOVE_OFFSET()
.OP1_FROM_RESULT();
p .ALU_SIMPLE_LONG_ADD();
<span class="comment">// wait for instruction prefetch</span>
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .PC_FROM_RESULT();
<span class="comment">// wait for PC check</span>
p .ALU_SIMPLE_MOVE();
<span class="comment">// jump here if no branch</span>
p .label(<span class="stringliteral">"bcc_bra_no_branch"</span>);
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_DBcc"</span>);
p .BRANCH_condition_1().offset(<span class="stringliteral">"dbcc_condition_true"</span>);
p .OP2_LOAD_1()
.SIZE_WORD().EA_REG_IR_2_0().EA_MOD_DN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_SIMPLE_LONG_SUB();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .OP1_FROM_PC()
.SIZE_WORD().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .BRANCH_result().offset(<span class="stringliteral">"dbcc_condition_true"</span>);
p .OP1_FROM_IMMEDIATE()
.ALU_SIMPLE_MOVE();
p .OP2_FROM_OP1()
.OP1_FROM_RESULT();
p .ALU_SIMPLE_LONG_ADD()
<span class="comment">// wait for instruction prefetch</span>
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .PC_FROM_RESULT();
<span class="comment">// wait for PC check</span>
p .ALU_SIMPLE_MOVE();
p .BRANCH_procedure().PROCEDURE_return();
<span class="comment">// jump here if condition is true</span>
p .label(<span class="stringliteral">"dbcc_condition_true"</span>);
p .PC_INCR_BY_2()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_MOVE_FROM_SR"</span>);
p .OP1_FROM_SR()
.SIZE_WORD().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATAALTER();
p .ALU_SIMPLE_MOVE()
.BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_MOVE_TO_CCR_MOVE_TO_SR"</span>);
p .SIZE_WORD().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_DATA();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .ALU_MOVE_TO_CCR_SR_RTE_RTR_STOP_LOGIC_TO_CCR_SR()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_MOVE_USP_to_USP"</span>);
p .SIZE_LONG().EA_REG_IR_2_0().EA_MOD_AN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .ALU_SIMPLE_MOVE();
p .AN_ADDRESS_USP()
.AN_WRITE_ENABLE_SET();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_MOVE_USP_to_An"</span>);
p .OP1_FROM_USP()
.SIZE_LONG().EA_REG_IR_2_0().EA_MOD_AN().EA_TYPE_ALL();
p .ALU_SIMPLE_MOVE()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_LINK"</span>);
<span class="comment">// load An to OP1</span>
p .SIZE_LONG().EA_REG_IR_2_0().EA_MOD_AN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
<span class="comment">// move OP1 to result</span>
p .ALU_LINK_MOVE()
.SIZE_LONG().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
<span class="comment">// write result to (SP)</span>
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
<span class="comment">// load SP to OP1</span>
p .SIZE_LONG().EA_REG_3b111().EA_MOD_AN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
<span class="comment">// move OP1 to result</span>
p .ALU_SIMPLE_MOVE()
.SIZE_LONG().EA_REG_IR_2_0().EA_MOD_AN().EA_TYPE_ALL();
<span class="comment">// save result to An</span>
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
<span class="comment">// load offset word to OP1</span>
p .SIZE_WORD().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE();
<span class="comment">// move OP1 to OP2</span>
p .OP2_FROM_OP1()
.SIZE_LONG().EA_REG_3b111().EA_MOD_AN().EA_TYPE_ALL();
<span class="comment">// load SP to OP1</span>
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
<span class="comment">// add offset and SP to SP</span>
p .ALU_SIMPLE_LONG_ADD()
.BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_ULNK"</span>);
<span class="comment">// load An to OP1</span>
p .SIZE_LONG().EA_REG_IR_2_0().EA_MOD_AN().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
<span class="comment">// move OP1 to result</span>
p .ALU_SIMPLE_MOVE()
.SIZE_LONG().EA_REG_3b111().EA_MOD_AN().EA_TYPE_ALL();
<span class="comment">// save result to SP</span>
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
<span class="comment">// load (SP) to OP1</span>
p .SIZE_LONG().EA_REG_3b111().EA_MOD_POSTINC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_perform_ea_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
<span class="comment">// move OP1 to result</span>
p .ALU_SIMPLE_MOVE()
.SIZE_LONG().EA_REG_IR_2_0().EA_MOD_AN().EA_TYPE_ALL();
<span class="comment">// save result to An</span>
p .BRANCH_procedure().PROCEDURE_call_perform_ea_write();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_BSR"</span>);
p .OP1_FROM_PC();
p .ALU_SIMPLE_MOVE()
.BRANCH_ir().offset(<span class="stringliteral">"bsr_no_word"</span>);
p .SIZE_WORD().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE();
<span class="comment">// jump here if no need to load extra immediate word</span>
p .label(<span class="stringliteral">"bsr_no_word"</span>);
p .OP2_FROM_OP1();
p .OP2_MOVE_OFFSET()
.OP1_FROM_RESULT();
p .ALU_SIMPLE_LONG_ADD();
<span class="comment">// wait for instruction prefetch</span>
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .OP1_FROM_PC()
.PC_FROM_RESULT();
p .SIZE_LONG().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
p .ALU_SIMPLE_MOVE()
.BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_JMP"</span>);
p .SIZE_LONG().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_CONTROL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .OP1_FROM_ADDRESS();
p .ALU_SIMPLE_MOVE();
<span class="comment">// wait for instruction prefetch</span>
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .PC_FROM_RESULT();
<span class="comment">// wait for PC check</span>
p .ALU_SIMPLE_MOVE();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_JSR"</span>);
p .SIZE_LONG().EA_REG_IR_2_0().EA_MOD_IR_5_3().EA_TYPE_CONTROL();
p .BRANCH_procedure().PROCEDURE_call_load_ea();
p .OP1_FROM_ADDRESS();
p .ALU_SIMPLE_MOVE();
<span class="comment">// wait for instruction prefetch</span>
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .OP1_FROM_PC()
.PC_FROM_RESULT();
p .SIZE_LONG().EA_REG_3b111().EA_MOD_PREDEC().EA_TYPE_ALL();
p .ALU_SIMPLE_MOVE()
.BRANCH_procedure().PROCEDURE_call_load_ea();
p .BRANCH_procedure().PROCEDURE_call_write();
p.label(<span class="stringliteral">"MICROPC_RTE_RTR"</span>);
p .SIZE_WORD().EA_REG_3b111().EA_MOD_POSTINC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .ALU_SIMPLE_MOVE()
.SIZE_LONG().EA_REG_3b111().EA_MOD_POSTINC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .ALU_SIMPLE_MOVE()
.OP1_FROM_RESULT();
p .ALU_MOVE_TO_CCR_SR_RTE_RTR_STOP_LOGIC_TO_CCR_SR();
<span class="comment">// wait for instruction prefetch</span>
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .PC_FROM_RESULT();
<span class="comment">// wait for PC check</span>
p .ALU_SIMPLE_MOVE();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_RTS"</span>);
p .SIZE_LONG().EA_REG_3b111().EA_MOD_POSTINC().EA_TYPE_ALL();
p .BRANCH_procedure().PROCEDURE_call_read();
p .BRANCH_procedure().PROCEDURE_call_save_ea();
p .ALU_SIMPLE_MOVE();
<span class="comment">// wait for instruction prefetch</span>
p .BRANCH_procedure().PROCEDURE_wait_prefetch_valid();
p .PC_FROM_RESULT();
<span class="comment">// wait for PC check</span>
p .ALU_SIMPLE_MOVE();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_NOP"</span>);
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_TRAP"</span>);
p .TRAP_TRAP()
.BRANCH_procedure().PROCEDURE_call_trap();
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_TRAPV"</span>);
p .BRANCH_V().offset(<span class="stringliteral">"trapv_no_trap"</span>);
p .TRAP_TRAPV()
.BRANCH_procedure().PROCEDURE_call_trap();
<span class="comment">// jump here if overflow == 0</span>
p .label(<span class="stringliteral">"trapv_no_trap"</span>);
p .BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_RESET"</span>);
p .DO_RESET_FLAG_SET();
p .BRANCH_procedure().PROCEDURE_wait_finished();
p .DO_RESET_FLAG_CLEAR()
.BRANCH_procedure().PROCEDURE_return();
p.label(<span class="stringliteral">"MICROPC_STOP"</span>);
p .SIZE_WORD().EA_REG_3b100().EA_MOD_3b111().EA_TYPE_ALL()
.BRANCH_procedure().PROCEDURE_wait_prefetch_valid_32();
p .OP1_FROM_IMMEDIATE()
.PC_INCR_BY_SIZE();
p .ALU_MOVE_TO_CCR_SR_RTE_RTR_STOP_LOGIC_TO_CCR_SR()
.STOP_FLAG_SET()
.BRANCH_procedure().PROCEDURE_return();
}
}
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