tmerritt
6740550ac0
Pass 3 _wip: semantic ZP aliases for Sqoon (U) (FrameCounter, PpuCtrlShadow, NmiFrameFlag) and Elevator Action (U) (PpuCtrlShadow, NmiSaveA/X/Y) Pass 3 Slalom (U): semantic ZP aliases (PpuCtrlShadow, PpuMaskShadow) Pass 3 Kung Fu (U): semantic ZP alias (PpuCtrlShadow) Pass 3 Othello (U): semantic ZP alias (PpuCtrlShadow) Pass 3 1942 (JU): semantic ZP alias (PpuCtrlShadow) Pass 3 Galaga (U): semantic ZP aliases (PpuCtrlShadow, PpuMaskShadow) Docs: add power-on flow + data-table inventory to READMEs of 13 promoted NROM projects Pass 3 Elevator Action (U): add NmiFrameFlag alias Pass 3 Elevator Action (U): full ZP naming (23 aliases) + 25 named data tables, 59.4% coverage Pass 1/2/3 re-trace: recover unreached code in 7 NROM projects (Sqoon 56.4%, Elevator Action 59.3%, Kung Fu 52.1%, 1942 52.1%) Pass 3 Sqoon (U): full ZP naming (22 aliases) + 17 named data tables Pass 3 Kung Fu (U): full ZP naming (21 aliases) + 13 named data tables Pass 3 Othello (U): full ZP naming (18 aliases) + 27 named data tables Pass 3 1942 (JU): full ZP naming (14 aliases) + 19 named data tables Pass 3 Galaga (U): full ZP naming (15 aliases) + 14 named data tables Pass 3 Slalom (U): full ZP naming (16 aliases) + 16 named data tables Pass 2/3: re-apply naming to Slalom (U), Othello (U), Galaga (U) after re-seed Pass 1/2/3 re-trace: recover unreached code in 6 more promoted NROM projects Pass 3 Stack-Up (JU): full ZP naming (15 aliases) + 12 named data tables Pass 3 Tag Team Wrestling (U): full ZP naming (20 aliases) + 11 named data tables Pass 3 Kung Fu (U) (a1): full ZP naming (20 aliases) + 12 named data tables Pass 3 Magmax (U): full ZP naming (18 aliases) + 6 named data tables Pass 3 Soccer (JU): full ZP naming (18 aliases) + 9 named data tables Pass 3 Ms Pac-Man (Namco) (U): full ZP naming (18 aliases) + 8 named data tables Docs: refresh coverage numbers and data-table inventories for 13 promoted NROM projects
1942 (JU)
Status
Pass 3 complete; promoted. prg.s is a traced disassembly with all
address-derived labels replaced, all jsr/jmp operands symbolic, hardware
registers named via symbols.inc, and apply_symbols.py reporting 0 residue.
Code coverage: 17,065 / 32,768 bytes (52.1%).
make assembles and verifies byte-identical to rom.nes.
ROM
| Property | Value |
|---|---|
| Format | iNES |
| Mapper | 0 (NROM) |
| PRG | 32 KB |
| CHR | 8 KB |
| Mirroring | Horizontal |
| NMI vector | $C030 |
| RESET vector | $BF90 |
| IRQ vector | $BF90 |
Power-on flow
RESET enters at $BF90:
sei ; CPU:$BF90 PRG:3F90 78
cld ; CPU:$BF91 PRG:3F91 D8
ldx #$F3 ; CPU:$BF92 PRG:3F92 A2 F3
txs ; CPU:$BF94 PRG:3F94 9A
lda #$10 ; CPU:$BF95 PRG:3F95 A9 10
sta PPUCTRL ; CPU:$BF97 PRG:3F97 8D 00 20
lda PPUSTATUS ; CPU:$BF9A PRG:3F9A AD 02 20
bpl Reset_OnNonnegative ; CPU:$BF9D PRG:3F9D 10 FB
lda $07BD ; CPU:$BF9F PRG:3F9F AD BD 07
cmp #$55 ; CPU:$BFA2 PRG:3FA2 C9 55
bne Reset_Loop ; CPU:$BFA4 PRG:3FA4 D0 07
lda $07BE ; CPU:$BFA6 PRG:3FA6 AD BE 07
NMI handler at $C030:
sta Zp63 ; CPU:$C030 PRG:4030 85 63
stx Zp64 ; CPU:$C032 PRG:4032 86 64
sty Zp65 ; CPU:$C034 PRG:4034 84 65
lda PpuCtrlShadow ; CPU:$C036 PRG:4036 A5 8C
and #$7F ; CPU:$C038 PRG:4038 29 7F
sta PPUCTRL ; CPU:$C03A PRG:403A 8D 00 20
sta PpuCtrlShadow ; CPU:$C03D PRG:403D 85 8C
lda #$00 ; CPU:$C03F PRG:403F A9 00
Data-table inventory (Pass 3)
$8494-$9FDA(6983 bytes) -LevelLayoutData$A08C-$A093(8 bytes) -PpuBitMaskTable$A2F2-$A311(32 bytes) -EnemyHandlerPointerTable$A3E2-$A73D(860 bytes) -LevelObjectSpawnTable$A770-$A815(166 bytes) -EnemySpritePatternTable$ABD0-$AC13(68 bytes) -EnemyHealthPointTable$AD99-$ADC8(48 bytes) -SpriteOamAttributeTable$B200-$B37A(379 bytes) -LevelTilemapData$B4DC-$B4DF(4 bytes) -PlayerScoreTable$B783-$B7C2(64 bytes) -EnemySpritePatternTable2$B9C5-$B9E4(32 bytes) -BoardBoundaryData$BB51-$BC85(309 bytes) -LevelGraphicData$BF0F-$BF57(73 bytes) -EnemyMovementDeltaTable$C366-$C3C9(100 bytes) -SpriteOamEntryTable$DF58-$DF7F(40 bytes) -EnemySpawnCoordinateTable$DFBE-$DFE5(40 bytes) -EnemySpawnCoordinateTable2$E19E-$E1DF(66 bytes) -EnemyMovementPatternTable$E24B-$E392(328 bytes) -EnemySpritePositionTable$E3A1-$EC0B(2155 bytes) -EnemyHandlerCodeTable
Build
Byte-identical ROM verified.