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[/] [cpu6502_true_cycle/] [trunk/] [rtl/] [vhdl/] [r6502_tc.vhd] - Rev 26

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26 v1.4 PRODUCTION fpga_is_funny 2266d 00h /cpu6502_true_cycle/trunk/rtl/vhdl/r6502_tc.vhd
24 Bug fix for wrong interrupt sequences in IRQ and NMI. Tested by
simulation with RTI and in a real environment by customer.
Removed directory ./verilog_TRIAL from source.		 fpga_is_funny 5371d 23h /cpu6502_true_cycle/trunk/rtl/vhdl/r6502_tc.vhd
18 New directory structure. root 5743d 01h /cpu6502_true_cycle/trunk/rtl/vhdl/r6502_tc.vhd
15 CORRECTED "RTI" (wrong: use of stack pointer)
RENAME all states of "FSM Execution Unit" for better reading
(90%) Finish working for Specification of cpu6502_tc		 fpga_is_funny 5755d 03h /cpu6502_true_cycle/trunk/rtl/vhdl/r6502_tc.vhd
14 More optimizations...
- Second Phaze of removing unused nets & registers
- Added Verilog source on demand by some customers (for trial use)		 fpga_is_funny 5802d 00h /cpu6502_true_cycle/trunk/rtl/vhdl/r6502_tc.vhd
11 *** EMERGENCY BUGFIX ***
- Signal rd_o was corrupted in last version. wr_o and wr_n are not effected.
- OP JMP (indirect) produced a 65C02 like jump. On 6502 a special case exist
when the (indirect) address cross the page boundary (e.g. JMP (02FF) reads
from $02FF and $0200, instead of $02FF and $0300)		 fpga_is_funny 5806d 22h /cpu6502_true_cycle/trunk/rtl/vhdl/r6502_tc.vhd
5 Bugfixes for all relationchips with interrupts BRK, IRQ and NMI.
The control for the stack pointer within fsm*s of BRK, IRQ and NMI was incorrect. The stack was allways growing up instead of growing down.
The "B" status flag was never set within BRK.
The relationchip between addresses and data while writing onto the stack was badly misalligned.		 fpga_is_funny 6069d 02h /cpu6502_true_cycle/trunk/rtl/vhdl/r6502_tc.vhd
3 This commit was generated by cvs2svn to compensate for changes in r2, which
included commits to RCS files with non-trunk default branches.		 fpga_is_funny 6078d 01h /cpu6502_true_cycle/trunk/rtl/vhdl/r6502_tc.vhd
2 First Revision
After the successfully functional test with a SoC of an APPLE][+, I corrected the wrong CVS log entry "$log$" to "$Log$" into all VHDL files. I hope this will not have a bad impact for cpu6502_tc...smile
The CVS history in the VHDL files is fine now.		 fpga_is_funny 6078d 01h /cpu6502_true_cycle/trunk/rtl/vhdl/r6502_tc.vhd

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