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Line 29... |
//
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//
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// *Author(s):
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// *Author(s):
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// - Olivier Girard, olgirard@gmail.com
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// - Olivier Girard, olgirard@gmail.com
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//
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//
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//----------------------------------------------------------------------------
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//----------------------------------------------------------------------------
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// $Rev: 34 $
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// $Rev: 102 $
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// $LastChangedBy: olivier.girard $
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// $LastChangedBy: olivier.girard $
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// $LastChangedDate: 2009-12-29 20:10:34 +0100 (Tue, 29 Dec 2009) $
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// $LastChangedDate: 2011-03-04 23:02:09 +0100 (Fri, 04 Mar 2011) $
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//----------------------------------------------------------------------------
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//----------------------------------------------------------------------------
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`include "timescale.v"
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`include "timescale.v"
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`include "openMSP430_defines.v"
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`include "openMSP430_defines.v"
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module omsp_execution_unit (
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module omsp_execution_unit (
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(inst_type[`INST_TO] & inst_ad[`DIR] & ~inst_alu[`EXEC_NO_WR]) |
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(inst_type[`INST_TO] & inst_ad[`DIR] & ~inst_alu[`EXEC_NO_WR]) |
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(inst_type[`INST_SO] & inst_as[`DIR] & ~(inst_so[`PUSH] | inst_so[`CALL] | inst_so[`RETI])) |
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(inst_type[`INST_SO] & inst_as[`DIR] & ~(inst_so[`PUSH] | inst_so[`CALL] | inst_so[`RETI])) |
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inst_type[`INST_JMP])) | dbg_reg_wr;
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inst_type[`INST_JMP])) | dbg_reg_wr;
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wire reg_sp_wr = (((e_state==`E_IRQ_1) | (e_state==`E_IRQ_3)) & ~inst_irq_rst) |
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wire reg_sp_wr = (((e_state==`E_IRQ_1) | (e_state==`E_IRQ_3)) & ~inst_irq_rst) |
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((e_state==`E_DST_RD) & (inst_so[`PUSH] | inst_so[`CALL]));
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((e_state==`E_DST_RD) & ((inst_so[`PUSH] & ~inst_as[`IDX] &
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~((inst_as[`INDIR] | inst_as[`INDIR_I]) & inst_src[1])) |
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inst_so[`CALL])) |
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((e_state==`E_SRC_AD) & (inst_so[`PUSH] & inst_as[`IDX])) |
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((e_state==`E_SRC_RD) & (inst_so[`PUSH] & ((inst_as[`INDIR] | inst_as[`INDIR_I]) & inst_src[1])));
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wire reg_sr_wr = (e_state==`E_DST_RD) & inst_so[`RETI];
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wire reg_sr_wr = (e_state==`E_DST_RD) & inst_so[`RETI];
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wire reg_sr_clr = (e_state==`E_IRQ_2);
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wire reg_sr_clr = (e_state==`E_IRQ_2);
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((e_state==`E_SRC_WR) & ~inst_as[`ABS]) |
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((e_state==`E_SRC_WR) & ~inst_as[`ABS]) |
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((e_state==`E_EXEC) & inst_as[`DIR] & ~inst_type[`INST_JMP]);
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((e_state==`E_EXEC) & inst_as[`DIR] & ~inst_type[`INST_JMP]);
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wire src_reg_dest_sel = (e_state==`E_IRQ_1) |
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wire src_reg_dest_sel = (e_state==`E_IRQ_1) |
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(e_state==`E_IRQ_3) |
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(e_state==`E_IRQ_3) |
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((e_state==`E_DST_RD) & (inst_so[`PUSH] | inst_so[`CALL]));
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((e_state==`E_DST_RD) & (inst_so[`PUSH] | inst_so[`CALL])) |
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((e_state==`E_SRC_AD) & inst_so[`PUSH] & inst_as[`IDX]);
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wire src_mdb_in_val_sel = ((e_state==`E_DST_RD) & inst_so[`RETI]) |
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wire src_mdb_in_val_sel = ((e_state==`E_DST_RD) & inst_so[`RETI]) |
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((e_state==`E_EXEC) & (inst_as[`INDIR] | inst_as[`INDIR_I] |
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((e_state==`E_EXEC) & (inst_as[`INDIR] | inst_as[`INDIR_I] |
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inst_as[`IDX] | inst_as[`SYMB] |
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inst_as[`IDX] | inst_as[`SYMB] |
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inst_as[`ABS]));
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inst_as[`ABS]));
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inst_type[`INST_SO]) & ~inst_so[`RETI]);
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inst_type[`INST_SO]) & ~inst_so[`RETI]);
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wire dst_fffe_sel = (e_state==`E_IRQ_0) |
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wire dst_fffe_sel = (e_state==`E_IRQ_0) |
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(e_state==`E_IRQ_1) |
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(e_state==`E_IRQ_1) |
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(e_state==`E_IRQ_3) |
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(e_state==`E_IRQ_3) |
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((e_state==`E_DST_RD) & (inst_so[`PUSH] | inst_so[`CALL]) & ~inst_so[`RETI]);
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((e_state==`E_DST_RD) & (inst_so[`PUSH] | inst_so[`CALL]) & ~inst_so[`RETI]) |
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((e_state==`E_SRC_AD) & inst_so[`PUSH] & inst_as[`IDX]) |
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((e_state==`E_SRC_RD) & inst_so[`PUSH] & (inst_as[`INDIR] | inst_as[`INDIR_I]) & inst_src[1]);
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wire dst_reg_dest_sel = ((e_state==`E_DST_RD) & ~(inst_so[`PUSH] | inst_so[`CALL] | inst_ad[`ABS] | inst_so[`RETI])) |
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wire dst_reg_dest_sel = ((e_state==`E_DST_RD) & ~(inst_so[`PUSH] | inst_so[`CALL] | inst_ad[`ABS] | inst_so[`RETI])) |
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((e_state==`E_DST_WR) & ~inst_ad[`ABS]) |
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((e_state==`E_DST_WR) & ~inst_ad[`ABS]) |
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((e_state==`E_EXEC) & (inst_ad[`DIR] | inst_type[`INST_JMP] |
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((e_state==`E_EXEC) & (inst_ad[`DIR] | inst_type[`INST_JMP] |
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inst_type[`INST_SO]) & ~inst_so[`RETI]);
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inst_type[`INST_SO]) & ~inst_so[`RETI]);
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