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Fixup Byte Code Table formatting

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Michaelangel007 2017-03-25 20:23:14 -07:00
parent 5ac1721dd4
commit ad31559b2f
1 changed files with 26 additions and 26 deletions
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@ -2205,32 +2205,31 @@ Comparing the two jump tables:
We find they are identical (barring the +2 offset.)
Let's decode the byte code tokens:
Let's decode the byte code tokens @ $0845:
```
0845 FunctionJumpTable
0845: [$00] CMD_DONE $0886 Return to caller, like 6502: $00 BRK
0847: [$01] CMD_TEXT $FB36 SETTXT-3
0849: [$02] CMD_HOME $FC58 HOME
084B: [$03] CMD_NORM $088F Switch to Normal Text
084D: [$04] CMD_INV $0892 Switch to Inverse Text
084F: [$05] CMD_05 $089C
0851: [$06] CMD_EOL $FC9C CLREOL
0853: [$07] CMD_CLR $FC42 CLREOP
0855: [$08] CMD_HTAB $08A2 xx -> $24 = x-1
0857: [$09] CMD_VTAB $08A9 -> Call $FB5B TABV yy+1
0859: [$0A] CMD_REP $08B1 xx yy Print char XX repeated YY times
085B: [$0B] CMD_0B $03EA
085D: [$0C] CMD_PR0 $FE93 SETVID (PR#0)
085F: [$0D] CMD_POKE $08C0 lo hi val, like 6502: $8D STA $abs
0861: [$0E] CMD_DUP_E $08C9 Duplicate of CMD_PTR$
0863: [$0F] CMD_DUP_F $08C9 Duplicate of CMD_PTR$
0865: [$10] CMD_PTR$ $08C9 Print Pointer to String
0867: [$11] CMD_JSR2 $08D7 JSR address at next two bytes
0869: [$12] CMD_INKEY $08ED Wait for keypress
086B: [$13] CMD_BEEP $0902 Soft Beep
[$20] CMD_JSR -> remapped to [$11] JSR yy xx
```
|Code|Byte Code|Command |Dispatch|Description |
|:--:|:-------:|:--------|:------:|:--------------------------------------|
|0845| [ $00 ] |CMD_DONE | $0886 |Return to caller, like 6502: $00 BRK |
|0847| [ $01 ] |CMD_TEXT | $FB36 |SETTXT-3 |
|0849| [ $02 ] |CMD_HOME | $FC58 |HOME |
|084B| [ $03 ] |CMD_NORM | $088F |Switch to Normal Text |
|084D| [ $04 ] |CMD_INV | $0892 |Switch to Inverse Text |
|084F| [ $05 ] |CMD_05 | $089C | |
|0851| [ $06 ] |CMD_EOL | $FC9C |CLREOL |
|0853| [ $07 ] |CMD_CLR | $FC42 |CLREOP |
|0855| [ $08 ] |CMD_HTAB | $08A2 |xx -> $24 = x-1 |
|0857| [ $09 ] |CMD_VTAB | $08A9 |-> Call $FB5B TABV yy+1 |
|0859| [ $0A ] |CMD_REP | $08B1 |xx yy Print char XX repeated YY times |
|085B| [ $0B ] |CMD_0B | $03EA | |
|085D| [ $0C ] |CMD_PR0 | $FE93 |SETVID (PR#0) |
|085F| [ $0D ] |CMD_POKE | $08C0 |lo hi val, like 6502: $8D STA $abs |
|0861| [ $0E ] |CMD_DUP_E| $08C9 |Duplicate of CMD_PTR$ |
|0863| [ $0F ] |CMD_DUP_F| $08C9 |Duplicate of CMD_PTR$ |
|0865| [ $10 ] |CMD_PTR$ | $08C9 |Print Pointer to String |
|0867| [ $11 ] |CMD_JSR2 | $08D7 |JSR address at next two bytes |
|0869| [ $12 ] |CMD_INKEY| $08ED |Wait for keypress |
|086B| [ $13 ] |CMD_BEEP | $0902 |Soft Beep |
| | [ $20 ] |CMD_JSR | | -> remapped to [$11] JSR yy xx |
### Backup 1 Disasembly
@ -2503,13 +2502,14 @@ Sure enough we get this backup used screen:
* ![Backup used](pics/backup_used.png)
And just for kicks, let's use an original version that already _has_ been
backed up.
backed up and "trick" it so that the code thinks it is still a virgin master.
```asm
9600<C600.C6FFM
96FA:
```
TODO: FIXME