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6502decoder's Issues

Segmentation fault on typo in fx2pipe

I added an extra 'i' to the -ifclk parameter. fx2pipe does not react gracefully:
:)
paganini@Ariel:~$ sudo fx2pipe -ifclik=xi -n=4k >16.bin
Segmentation fault

paganini@Ariel:~$ uname -a Linux Ariel 6.2.0-26-generic #26~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Jul 13 16:27:29 UTC 2 x86_64 x86_64 x86_64 GNU/Linu

Build failure for fx2pipe on LMDE

Hi,
I'm getting a weird compiler error building this:

Making all in usb_io
make[2]: Entering directory '/home/steve/src/6502Decoder/fx2pipe/usb_io'
g++ -DHAVE_CONFIG_H -I. -I.. -I. -I.. -I..    -g -O2 -MT wwusb.o -MD -MP -MF .deps/wwusb.Tpo -c -o wwusb.o wwusb.cc
In file included from wwusb.h:25,
                 from wwusb.cc:22:
/usr/include/linux/usbdevice_fs.h:134:41: error: flexible array member ‘usbdevfs_urb::iso_frame_desc’ not at end of ‘struct WWUSBDevice::URB’
  134 |         struct usbdevfs_iso_packet_desc iso_frame_desc[];
      |                                         ^~~~~~~~~~~~~~
wwusb.h:119:29: note: next member ‘int WWUSBDevice::URB::cancelled’ declared here
  119 |                         int cancelled;
      |                             ^~~~~~~~~
wwusb.h:116:24: note: in the definition of ‘struct WWUSBDevice::URB’
  116 |                 struct URB : LinkedListBase<URB>, usbdevfs_urb
      |                        ^~~
make[2]: *** [Makefile:218: wwusb.o] Error 1
make[2]: Leaving directory '/home/steve/src/6502Decoder/fx2pipe/usb_io'

My system is:

$ uname -a
Linux steevo 6.1.0-20-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.85-1 (2024-04-11) x86_64 GNU/Linux

Thanks!
Steve

Implement flags for 65C02 variants

Specifically, flags to control:
(1) - rockwell (and wdc) extensions (RMB/SMB/BBR/BBS)
(2) - wdc only extensions (WAI/STP)

Currently (1) is enabled and (2) is disabled

Which matches the Rockwell R65C02 processor

Fix C02 case where emulation needs to be enabled

Any C02 processor:
} else if (instr->decimalcorrect && (em_get_D() == 1)) {
// read operations on the C02 that have an extra cycle added

Or find a workaround that doesn't require the D flag.

Sampling on the Master @ 12MHz sometimes picks wrong sample

This was captured on the Master with the DIP Clip (Phi2 on Pin 39 Clk0In) running *BCDTEST (disk 259)

4473001 8b 0 0 1 0
4473002 20 0 0 1 0
4473003 00 0 0 1 1
4473004 00 0 0 1 1
4473005 00 0 0 1 1
4473006 00 1 1 1 0
3 00 0 0 1
4473007 00 1 1 1 0
4473008 20 1 1 1 0
4473009 8d 1 1 1 1
4473010 8d 1 1 1 1
4473011 8d 1 1 1 1
4473012 8d 1 0 1 0
A81F : 8D 8B 8B : STA 8B8B      A=00 X=06 Y=00 SP=EA N=0 V=0 D=0 I=0 Z=1 C=1
0 8d 1 1 1
4473013 8d 1 0 1 0
4473014 20 1 0 1 0
4473015 8c 1 0 1 1
4473016 8c 1 0 1 1
4473017 8c 1 0 1 1
4473018 8c 1 0 1 0
1 8c 1 0 1
4473019 8c 1 0 1 0
4473020 20 1 0 1 0
4473021 c2 1 0 1 1 <<<< Correct
4473022 c2 1 0 1 1 <<<< Correct
4473023 c2 1 0 1 1 <<<< Correct
4473024 8c 0 0 1 0 <<<< Missampled
2 8c 1 0 1
4473025 8c 0 0 1 0
4473026 20 0 0 1 0
4473027 00 0 0 1 1
4473028 00 0 0 1 1
4473029 00 0 0 1 1
4473030 00 1 1 1 0
3 00 0 0 1
4473031 00 1 1 1 0
4473032 20 1 1 1 0
4473033 a9 1 1 1 1
4473034 a9 1 1 1 1
4473035 a9 1 1 1 1
4473036 a9 1 0 1 0
A822 : 8D 8C 8C : STA 8C8C      A=00 X=06 Y=00 SP=EA N=0 V=0 D=0 I=0 Z=1 C=1

Note, this doesn't seem to cause any failures to be flagged, but the MSB of the address in the disassembly is incorrect.

BBR0 not recognised correctly on 65C02 CPU

Hi Dave, hope you're well!

I've been debugging a Dormann test fail, and found that the decoder doesn't seem to understand opcode 0F (BBR 0). Here's the relevant part of the Dormann listing, and the decoder's output given the byte sequence you can see here - it looks to me like it just didn't understand the 0F opcode:

4a3a : 28              >            plp
                       >
4a3b : 0f0c06          >        bbr 0,zpt,fail10279
4a3e : 8f0c06          >        bbs 0,zpt,ok10279
                       >        trap            ;bbs branch not taken
4a41 : 20b273          >        jsr report_error


 3866098   3afdf2 0 28 ? ? ?
 3866099   3afdf3 1 0f ? ? ?
 3866100   3afdf4 2 00 ? ? ?
 3866101   3afdf5 3 00 ? ? ?
Rd:   4A3A = 28
Rd:   01FF = 00
4A3A : 28       : PLP            : 4 : A=33 X=11 Y=22 SP=FF N=0 V=0 D=0 I=0 Z=0 C=0
 3866102   3afdf6 0 0f ? ? ?
Rd:   4A3B = 0F
4A3B : 0F       : ???            : 1 : A=33 X=11 Y=22 SP=FF N=0 V=0 D=0 I=0 Z=0 C=0
 3866103   3afdf7 0 0c ? ? ?
 3866104   3afdf8 1 01 ? ? ?
 3866105   3afdf9 2 01 ? ? ?
 3866106   3afdfa 3 06 ? ? ?
 3866107   3afdfb 4 8f ? ? ?
 3866108   3afdfc 5 0c ? ? ?
Rd:   4A3C = 0C
Rd:   4A3D = 01
memory modelling failed at   4A3D: expected 06 actual 01
Rd:   4A3E = 01
memory modelling failed at   4A3E: expected 8F actual 01
Rd:   0101 = 06
Wr:   0101 = 0C
4A3C : 0C 01 01 : TSB 0101       : 6 : A=33 X=11 Y=22 SP=FF N=0 V=0 D=0 I=0 Z=0 C=0 prediction failed
 3866109   3afdfd 0 01 ? ? ?
 3866110   3afdfe 1 01 ? ? ?
 3866111   3afdff 2 06 ? ? ?
 3866112   3afe00 3 20 ? ? ?
 3866113   3afe01 4 08 ? ? ?
 3866114   3afe02 5 c9 ? ? ?

The command line I used was:

cat data14.bin | ../decode6502 -haisy -d 1 -b --vecrst=A2FE00 --cpu=65C02 --mem=FFF

I've also attached the data file for reference:

data14.bin.gz

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