Apple-2-SW/apple2_fantavision_reloaded
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Cleanup Indent logo loading disassembly

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Michaelangel007 2017-03-24 09:06:16 -07:00
parent 502a02bfdf
commit 75ab631c5f
1 changed files with 45 additions and 23 deletions
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@ -1573,28 +1573,28 @@ The rest of the code is pretty straightforward.
2. Enter in this short ML (machine language program)
```asm
1F01:A9 60 LDA #$60 ; "RTS"
1F03:8D 46 08 STA $0846 ; 846:LDX $2B -> RTS
1F06:8D 73 08 STA $0873 ; 873:LDX $2B -> RTS
1F09:20 01 08 JSR $0801 ;
1F0C:A9 17 LDA #$17 ; A=Track
1F0E:A0 20 LDY #$20 ; Y=Dest
1F10:20 20 1F JSR $1F20
1F13:A9 18 LDA #$18 ; A=Track
1F15:A0 30 LDY #$30 ; Y=Dest
1F17:20 20 1F JSR $1F20
1F1A:4C 69 FF JMP $FF69
1F01:A9 60 LDA #$60 ; "RTS"
1F03:8D 46 08 STA $0846 ; 846:LDX $2B -> RTS
1F06:8D 73 08 STA $0873 ; 873:LDX $2B -> RTS
1F09:20 01 08 JSR $0801 ;
1F0C:A9 17 LDA #$17 ; A = Track
1F0E:A0 20 LDY #$20 ; Y = Dest
1F10:20 20 1F JSR $1F20
1F13:A9 18 LDA #$18 ; A = Track
1F15:A0 30 LDY #$30 ; Y = Dest
1F17:20 20 1F JSR $1F20
1F1A:4C 69 FF JMP $FF69
1F20:8D 57 08 STA $857 ; LDA #$0F Track
1F23:A2 00 LDX #$00
1F25:98 TYA
1F26:9D CE 08 STA $08CE,X
1F29:C8 INY ; Dest Page
1F2A:E8 INX
1F2B:E0 10 CPX #$10 ; 16 sectors
1F2D:D0 F6 BNE $1F25
1F2F:A6 2B LDX $2B
1F31:4C 48 08 JMP $0848
1F20:8D 57 08 STA $857 ; LDA #Track
1F23:A2 00 LDX #$00
1F25:98 TYA
1F26:9D CE 08 STA $08CE,X
1F29:C8 INY ; Dest Page
1F2A:E8 INX
1F2B:E0 10 CPX #$10 ; 16 sectors
1F2D:D0 F6 BNE $1F25
1F2F:A6 2B LDX $2B
1F31:4C 48 08 JMP $0848
```
Via:
@ -1610,6 +1610,8 @@ Via:
1F2D:D0 F6 A6 2B 4C 48 08
```
* Note: That A and Y are swapped comprared to RWTS_ReadTrack at $B000
3. And save it:
```
@ -1646,7 +1648,7 @@ For some unknown reason there is actually a complete _second_ copy of the logo o
Hmm, why is our logo messed up??
It turns out 4 tracks are mirrored !?!?!?
It turns out there are 4 tracks that are mirrored !?!?!?
|Track| Description |
|:---:|:---------------------------:|
@ -1724,8 +1726,28 @@ That resides at $BE89:
BEA2:20 00 B0 JSR RTWS_LoadTrack
```
Here is a easy way to view these:
# Boot Tracing Stage 5
```
CALL-151
9600<C600.C6FFM
96FA:9F
9F00:60 60
9600G
FC58G
2B:60
880:9F
BE86:AD 54 C0
BEA5:60
BE86G
```
# Boot Tracing Stage 4
# "What this, 'Byte-Code', you say young chap?" Harrumph.