[Coco] 6309 microproccessor project

John Collyer johncollyer at zoominternet.net
Tue Nov 11 18:34:00 EST 2003


6309 microprocessor project.

Hello,

I found what I think is a terrible bug today, but no
one else noticed it. It's in the 6309 Monitor and Debug
Facility. It was easy to fix. The only problem I had was
coming up with something that didn't look so bad. Here
is my choice. ABCDGIME/Gime it needed to be done because
there was no Step Over command. I replaced the ver19.zip
if anyone is interested. Thanks.


TRS-80 COLOUR COMPUTER 3 EMULATOR               6309 Monitor and Debug Facility
--------------------------------------------------------------------------------
+---------------+ Memory dump: 0000
¦Registers:     ¦ 0000: 0022 2200 0000 FF00 0000 0001 A901 A400 .""........).$.
¦D  000B (A/B)  ¦ 0010: 0000 0000 0000 0000 0026 0126 0326 0326 .........&.&.&.&
¦W  0000 (E/F)  ¦ 0020: 037F 377F FF00 007F FF00 0000 0000 0000 .7.........
¦V  0000        ¦ 0030: 0000 0026 0000 0000 0000 0000 0000 0000 ...&............
¦X  00D9        ¦ 0040: 0000 0000 0000 0000 0000 0000 0000 0000 ................
¦Y  A00E        ¦ 0050: 0000 01A9 0000 0300 ABEE 0000 0000 0000 ...)....+n......
¦U  ABEE        ¦ 0060: 0000 ABEE ABF1 0000 0000 1010 0020 0000 ..+n+q..........
¦S  7F2B        ¦ 0070: 0055 C0E7 7FFF 0000 0000 0000 0000 0000 ..............
¦PC A7D5        ¦                              +-------------------------------+
¦DP 00          ¦ Disassembly: [PC]            ¦Option:        ¦Breakpoint     ¦
¦---------------¦ A7D5 BNE $A7D3               ¦A B C D G I M E¦Continue/Quit  ¦
¦---------------¦ A7D7 RTS                     ¦0 0 0 0 0 0 0 0¦Disassemble    ¦
¦---------------¦ A7D8 ORCC #%01010000         ¦---------------¦Edit Memory    ¦
¦Stack U    S   ¦ A7DA BSR $A7CA               ¦Flags:         ¦Flags/Hex Math ¦
¦---------------¦ A7DC LDX <$92                ¦E F H I N Z V C¦Locate Word    ¦
¦ +00  4F4B A0D9¦ A7DE BSR $A828               ¦1 0 0 0 0 0 0 0¦Memory Dump    ¦
¦ +02  0D00 0102¦ A7E0 LEAX -1,X               ¦---------------¦ABCDGIME/Gime  ¦
¦ +04  0D42 DDA1¦ A7E2 BNE $A7DE               ¦Mode:          ¦Register/ModeZ ¦
¦ +06  5245 73A3¦ A7E4 RTS                     ¦Z I A B C D F E¦Step In/Over   ¦
¦ +08  414B 9DAC¦ A7E5 BSR $A7D8               ¦0 0 0 0 0 0 0 0¦View Video     ¦
+---------------+ A7E7 BSR $A7F4               +-------------------------------+
Debugger requested.  Press "C" to resume normal operation.


More later

John Collyer 
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