Hi all, in the last weeks I've been putting more SuperPET features into VICE. I'm currently testing to see how far I get running the Waterloo software (all available from zimmers.net). I'm getting to the point where I can load in the disk-based software, and one of the first things it seems to do is to check the dongle. I've made a trace from that point on, until it goes into never-never land. Obviously my implementation of the 6702 dongle as a simple register isn't good enough! I've edited the monitor output for readability (sorry, I can't make it fit in 80 columns) and I added a few bits that I forgot the first time round. I've set a breakpoint on any access to eff0-eff4. The first register dump is seemingly *after* the listed instruction has been executed, but the subsequent ones are *before* the instruction has been run. This is what happened after I typed "disk/0.edit" (to load the file "edit" from drive 0 instead of the default drive 1). Can anybody see what this code is trying to do, and where it's going wrong? I can supply more disassembly if wanted. (I hope I didn't make too many mistakes in the disassembly code...) *** DONGLE efe0 -> 42 *** #1 (Stop on load efe0) 010 052 .C:9860 A6 F8 06 LDA [$06,S] - A:42 B:00 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF.....C (C:$9863) disable 1 Set checkpoint #1 to state: disabled .C:9863 8A 11 ORA #$11 >C:09dd 05 bb 92 bb 97 b8 ef e0 00 fe 00 04 9d e8 bc 0d ................ >C:09ed 00 0d 00 00 90 4d 00 01 a9 e6 00 00 aa 0d 00 00 .....M.......... >C:09fd a9 9c ff 02 01 02 05 3a 00 00 00 00 00 00 00 00 .......:........ (C:$9863) step .C:9867 A7 65 STA 5,S - A:53 B:00 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF.....C .C:9869 C6 40 LDB #$40 - A:53 B:00 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF.....C .C:986b 58 ASLB - A:53 B:40 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF.....C .C:986c E7 61 STB 1,S - A:53 B:80 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF..N.V. .C:986e E7 F8 06 STB [$06,S] - A:53 B:80 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF..N... *** DONGLE efe0 := 80 *** .C:9871 EC 64 LDD 4,S - A:53 B:80 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF..N... .C:9873 3D MUL - A:53 B:53 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF...... .C:9874 E7 65 STB 5,S - A:1A B:E9 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF.....C .C:9876 AA 65 ORA 5,S - A:1A B:E9 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF..N..C .C:9878 A7 64 STA 4,S - A:FB B:E9 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF..N..C .C:987a C8 D7 EORB #$D7 - A:FB B:E9 X:09EB Y:9057 SP:09DD U:02FC DP:00 EF..N..C .C:987c 68 F8 06 ASL [$06,S] - A:FB B:3E X:09EB Y:9057 SP:09DD U:02FC DP:00 EF.....C *** DONGLE efe0 -> 80 *** *** DONGLE efe0 := 00 *** .C:987f E8 F8 06 EORB [$06,S] - A:FB B:3E X:09EB Y:9057 SP:09DD U:02FC DP:00 EF...ZVC *** DONGLE efe0 -> 00 *** .C:9882 A6 65 LDA 5,S - A:FB B:3E X:09EB Y:9057 SP:09DD U:02FC DP:00 EF.....C .C:9884 A7 F8 06 STA [$06,S] - A:E9 B:3E X:09EB Y:9057 SP:09DD U:02FC DP:00 EF..N..C *** DONGLE efe0 := E9 *** .C:9887 68 F8 06 ASL [$06,S] - A:E9 B:3E X:09EB Y:9057 SP:09DD U:02FC DP:00 EF..N..C *** DONGLE efe0 -> E9 *** *** DONGLE efe0 := D2 *** .C:988a A6 F8 06 LDA [$06,S] - A:E9 B:3E X:09EB Y:9057 SP:09DD U:02FC DP:00 EF..N..C *** DONGLE efe0 -> D2 *** .C:988d A7 E4 STA ,S - A:D2 B:3E X:09EB Y:9057 SP:09DD U:02FC DP:00 EF..N..C .C:988f E7 82 STB ,-X - A:D2 B:3E X:09EB Y:9057 SP:09DD U:02FC DP:00 EF..N..C .C:9891 AF 62 STX 2,S - A:D2 B:3E X:09EA Y:9057 SP:09DD U:02FC DP:00 EF.....C .C:9893 E6 61 LDB 1,S - A:D2 B:3E X:09EA Y:9057 SP:09DD U:02FC DP:00 EF.....C .C:9895 8D 08 BSR $989F - A:D2 B:80 X:09EA Y:9057 SP:09DD U:02FC DP:00 EF..N..C >C:9897 10 80 22 00 40 00 04 a8 10 ae e1 aa e4 a4 a4 34 ..".@..........4 .C:989f 10 AE E1 LDY ,S++ - A:D2 B:80 X:09EA Y:9057 SP:09DB U:02FC DP:00 EF..N..C .C:98a2 AA E4 ORA ,S - A:D2 B:80 X:09EA Y:9897 SP:09DD U:02FC DP:00 EF..N..C .C:98a4 A4 A4 ANDA ,Y - A:D2 B:80 X:09EA Y:9897 SP:09DD U:02FC DP:00 EF..N..C .C:98a6 34 02 PSHS A - A:10 B:80 X:09EA Y:9897 SP:09DD U:02FC DP:00 EF.....C .C:98a8 A6 80 LDA ,X+ - A:10 B:80 X:09EA Y:9897 SP:09DC U:02FC DP:00 EF.....C .C:98aa A4 A0 ANDA ,Y+ - A:3E B:80 X:09EB Y:9897 SP:09DC U:02FC DP:00 EF.....C .C:98ac A0 E0 SUBA ,S+ - A:10 B:80 X:09EB Y:9898 SP:09DC U:02FC DP:00 EF.....C .C:98ae 26 0A BNE $98BA - A:00 B:80 X:09EB Y:9898 SP:09DD U:02FC DP:00 EF...Z.. .C:98b0 68 61 ASL 1,S - A:00 B:80 X:09EB Y:9898 SP:09DD U:02FC DP:00 EF...Z.. .C:98b2 26 EE BNE $98A2 - A:00 B:80 X:09EB Y:9898 SP:09DD U:02FC DP:00 EF...ZVC .C:98b4 AE 62 LDX 2,S - A:00 B:80 X:09EB Y:9898 SP:09DD U:02FC DP:00 EF...ZVC .C:98b6 54 LSRB - A:00 B:80 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF.....C .C:98b7 54 LSRB - A:00 B:40 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...... .C:98b8 26 B1 BNE $986B - A:00 B:20 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...... .C:986b 58 ASLB - A:00 B:20 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...... .C:986c E7 61 STB 1,S - A:00 B:40 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...... .C:986e E7 F8 06 STB [$06,S] - A:00 B:40 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...... *** DONGLE efe0 := 40 *** .C:9871 EC 64 LDD 4,S - A:00 B:40 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...... .C:9873 3D MUL - A:FB B:E9 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N... .C:9874 E7 65 STB 5,S - A:E4 B:73 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N... .C:9876 AA 65 ORA 5,S - A:E4 B:73 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...... .C:9878 A7 64 STA 4,S - A:F7 B:73 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N... .C:987a C8 D7 EORB #$D7 - A:F7 B:73 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N... .C:987c 68 F8 06 ASL [$06,S] - A:F7 B:A4 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N... *** DONGLE efe0 -> 40 *** *** DONGLE efe0 := 80 *** .C:987f E8 F8 06 EORB [$06,S] - A:F7 B:A4 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N.V. *** DONGLE efe0 -> 80 *** .C:9882 A6 65 LDA 5,S - A:F7 B:24 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...... .C:9884 A7 F8 06 STA [$06,S] - A:73 B:24 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...... *** DONGLE efe0 := 73 *** .C:9887 68 F8 06 ASL [$06,S] - A:73 B:24 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...... *** DONGLE efe0 -> 73 *** *** DONGLE efe0 := E6 *** .C:988a A6 F8 06 LDA [$06,S] - A:73 B:24 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N.V. *** DONGLE efe0 -> E6 *** .C:988d A7 E4 STA ,S - A:E6 B:24 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N... .C:988f E7 82 STB ,-X - A:E6 B:24 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N... .C:9891 AF 62 STX 2,S - A:E6 B:24 X:09E9 Y:9898 SP:09DD U:02FC DP:00 EF...... .C:9893 E6 61 LDB 1,S - A:E6 B:24 X:09E9 Y:9898 SP:09DD U:02FC DP:00 EF...... .C:9895 8D 08 BSR $989F - A:E6 B:40 X:09E9 Y:9898 SP:09DD U:02FC DP:00 EF...... .C:989f 10 AE E1 LDY ,S++ - A:E6 B:40 X:09E9 Y:9898 SP:09DB U:02FC DP:00 EF...... .C:98a2 AA E4 ORA ,S - A:E6 B:40 X:09E9 Y:9897 SP:09DD U:02FC DP:00 EF..N... .C:98a4 A4 A4 ANDA ,Y - A:E6 B:40 X:09E9 Y:9897 SP:09DD U:02FC DP:00 EF..N... .C:98a6 34 02 PSHS A - A:00 B:40 X:09E9 Y:9897 SP:09DD U:02FC DP:00 EF...Z.. .C:98a8 A6 80 LDA ,X+ - A:00 B:40 X:09E9 Y:9897 SP:09DC U:02FC DP:00 EF...Z.. .C:98aa A4 A0 ANDA ,Y+ - A:24 B:40 X:09EA Y:9897 SP:09DC U:02FC DP:00 EF...... .C:98ac A0 E0 SUBA ,S+ - A:00 B:40 X:09EA Y:9898 SP:09DC U:02FC DP:00 EF...Z.. .C:98ae 26 0A BNE $98BA - A:00 B:40 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...Z.. .C:98b0 68 61 ASL 1,S - A:00 B:40 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF...Z.. .C:98b2 26 EE BNE $98A2 - A:00 B:40 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N.V. .C:98a2 AA E4 ORA ,S - A:00 B:40 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N.V. .C:98a4 A4 A4 ANDA ,Y - A:E6 B:40 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N... .C:98a6 34 02 PSHS A - A:80 B:40 X:09EA Y:9898 SP:09DD U:02FC DP:00 EF..N... .C:98a8 A6 80 LDA ,X+ - A:80 B:40 X:09EA Y:9898 SP:09DC U:02FC DP:00 EF..N... .C:98aa A4 A0 ANDA ,Y+ - A:3E B:40 X:09EB Y:9898 SP:09DC U:02FC DP:00 EF...... .C:98ac A0 E0 SUBA ,S+ - A:00 B:40 X:09EB Y:9899 SP:09DC U:02FC DP:00 EF...Z.. .C:98ae 26 0A BNE $98BA - A:80 B:40 X:09EB Y:9899 SP:09DD U:02FC DP:00 EF..N.VC .C:98ba 32 6E LEAS 14,S - A:80 B:40 X:09EB Y:9899 SP:09DD U:02FC DP:00 EF..N.VC .C:98bc 39 RTS - A:80 B:40 X:09EB Y:9899 SP:09EB U:02FC DP:00 EF..N.VC .C:bc0d 34 06 PSHS D - A:80 B:40 X:09EB Y:9899 SP:09ED U:02FC DP:00 EF..N.VC .C:bc0f 37 24 PULU Y,B - A:80 B:40 X:09EB Y:9899 SP:09EB U:02FC DP:00 EF..N.VC .C:bc11 F7 02 20 STB $0220 - A:80 B:00 X:09EB Y:9057 SP:09EB U:02FF DP:00 EF..N.VC .C:bc14 F7 EF FC STB $EFFC - A:80 B:00 X:09EB Y:9057 SP:09EB U:02FF DP:00 EF...Z.C spet_bank := 0 spet_ctrlwp := 1 .C:bc17 EC E1 LDD ,S++ - A:80 B:00 X:09EB Y:9057 SP:09EB U:02FF DP:00 EF...Z.C .C:bc19 6E A4 JMP ,Y - A:80 B:40 X:09EB Y:9057 SP:09ED U:02FF DP:00 EF..N..C .C:9057 ED E4 STD ,S - A:80 B:40 X:09EB Y:9057 SP:09ED U:02FF DP:00 EF..N..C .C:9059 E6 63 LDB 3,S - A:80 B:40 X:09EB Y:9057 SP:09ED U:02FF DP:00 EF..N..C .C:905b 26 28 BNE $9085 - A:80 B:00 X:09EB Y:9057 SP:09ED U:02FF DP:00 EF...Z.C .C:905d DC 20 LDD <$20 - A:80 B:00 X:09EB Y:9057 SP:09ED U:02FF DP:00 EF...Z.C .C:905f DD 26 STD <$26 - A:0A B:00 X:09EB Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9061 DD 24 STD <$24 - A:0A B:00 X:09EB Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9063 C6 02 LDB #$02 - A:0A B:00 X:09EB Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9065 9E 24 LDX <$24 - A:0A B:02 X:09EB Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9067 E7 84 STB ,X - A:0A B:02 X:0A00 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9069 30 01 LEAX 1,X - A:0A B:02 X:0A00 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:906b 9F 24 STX <$24 - A:0A B:02 X:0A01 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:906d C6 01 LDB #$01 - A:0A B:02 X:0A01 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:906f E7 84 STB ,X - A:0A B:01 X:0A01 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9071 30 01 LEAX 1,X - A:0A B:01 X:0A01 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9073 9F 24 STX <$24 - A:0A B:01 X:0A02 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9075 DC 24 LDD <$24 - A:0A B:01 X:0A02 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9077 DD 28 STD <$28 - A:0A B:02 X:0A02 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9079 C6 02 LDB #$02 - A:0A B:02 X:0A02 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:907b E7 84 STB ,X - A:0A B:02 X:0A02 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:907d 30 01 LEAX 1,X - A:0A B:02 X:0A02 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:907f 9F 24 STX <$24 - A:0A B:02 X:0A03 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9081 C6 01 LDB #$01 - A:0A B:02 X:0A03 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9083 E7 84 STB ,X - A:0A B:01 X:0A03 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9085 EC E4 LDD ,S - A:0A B:01 X:0A03 Y:9057 SP:09ED U:02FF DP:00 EF.....C .C:9087 27 03 BEQ $908C - A:80 B:40 X:0A03 Y:9057 SP:09ED U:02FF DP:00 EF..N..C .C:9089 BD B0 03 JSR $B003 - A:80 B:40 X:0A03 Y:9057 SP:09ED U:02FF DP:00 EF..N..C .C:b003 7E BC AB JMP $BCAB - A:80 B:40 X:0A03 Y:9057 SP:09EB U:02FF DP:00 EF..N..C .C:bcab 34 04 PSHS B - A:80 B:40 X:0A03 Y:9057 SP:09EB U:02FF DP:00 EF..N..C .C:bcad 34 02 PSHS A - A:80 B:40 X:0A03 Y:9057 SP:09EA U:02FF DP:00 EF..N..C .C:bcaf 32 7B LEAS -5,S - A:80 B:40 X:0A03 Y:9057 SP:09E9 U:02FF DP:00 EF..N..C .C:bcb1 10 DE 2C LDS <$2C - A:80 B:40 X:0A03 Y:9057 SP:09E4 U:02FF DP:00 EF..N..C .C:bcb4 EC E4 LDD ,S - A:80 B:40 X:0A03 Y:9057 SP:0000 U:02FF DP:00 EF...Z.C .C:bcb6 DD 2C STD <$2C - A:00 B:00 X:0A03 Y:9057 SP:0000 U:02FF DP:00 EF...Z.C .C:bcb8 DE 33 LDU <$33 - A:00 B:00 X:0A03 Y:9057 SP:0000 U:02FF DP:00 EF...Z.C .C:bcba EC 62 LDD 2,S - A:00 B:00 X:0A03 Y:9057 SP:0000 U:053A DP:00 EF.....C .C:bcbc DD 33 STD <$33 - A:05 B:3A X:0A03 Y:9057 SP:0000 U:053A DP:00 EF.....C .C:bcbe 4F CLRA - A:05 B:3A X:0A03 Y:9057 SP:0000 U:053A DP:00 EF.....C .C:bcbf E6 64 LDB 4,S - A:00 B:3A X:0A03 Y:9057 SP:0000 U:053A DP:00 EF...Z.. .C:bcc1 F7 02 20 STB $0220 - A:00 B:0C X:0A03 Y:9057 SP:0000 U:053A DP:00 EF...... .C:bcc4 4F CLRA - A:00 B:0C X:0A03 Y:9057 SP:0000 U:053A DP:00 EF...... .C:bcc5 E6 64 LDB 4,S - A:00 B:0C X:0A03 Y:9057 SP:0000 U:053A DP:00 EF...Z.. .C:bcc7 F7 EF FC STB $EFFC - A:00 B:0C X:0A03 Y:9057 SP:0000 U:053A DP:00 EF...... spet_bank := 12 spet_ctrlwp := 1 .C:bcca CC 00 01 LDD #$0001 - A:00 B:0C X:0A03 Y:9057 SP:0000 U:053A DP:00 EF...... .C:bccd 32 67 LEAS 7,S - A:00 B:01 X:0A03 Y:9057 SP:0000 U:053A DP:00 EF...... .C:bccf 39 RTS - A:00 B:01 X:0A03 Y:9057 SP:0007 U:053A DP:00 EF...... .C:1400 00 00 NEG <$00 - A:00 B:01 X:0A03 Y:9057 SP:0009 U:053A DP:00 EF...... .C:1402 00 00 NEG <$00 - A:00 B:01 X:0A03 Y:9057 SP:0009 U:053A DP:00 EF...Z.. .C:1404 00 00 NEG <$00 - A:00 B:01 X:0A03 Y:9057 SP:0009 U:053A DP:00 EF...Z.. .C:1406 00 00 NEG <$00 - A:00 B:01 X:0A03 Y:9057 SP:0009 U:053A DP:00 EF...Z.. 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