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
73 lines
2.6 KiB
Markdown
73 lines
2.6 KiB
Markdown
# Stack-Up (JU)
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## Status
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**Pass 3 complete; promoted.** `prg.s` is a traced disassembly with all
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address-derived labels replaced, all `jsr`/`jmp` operands symbolic, hardware
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registers named via `symbols.inc`, and `apply_symbols.py` reporting 0 residue.
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Code coverage: 10,586 / 32,768 bytes (32.3%).
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`make` assembles and verifies byte-identical to `rom.nes`.
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## ROM
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| Property | Value |
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|----------|-------|
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| Format | iNES |
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| Mapper | 0 (NROM) |
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| PRG | 32 KB |
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| CHR | 8 KB |
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| Mirroring | Horizontal |
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| NMI vector | $81AD |
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| RESET vector | $8100 |
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| IRQ vector | $81E6 |
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## Power-on flow
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RESET enters at `$8100`:
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cld ; CPU:$8100 PRG:0100 D8
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sei ; CPU:$8101 PRG:0101 78
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ldx #$00 ; CPU:$8102 PRG:0102 A2 00
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stx PPUCTRL ; CPU:$8104 PRG:0104 8E 00 20
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stx PPUMASK ; CPU:$8107 PRG:0107 8E 01 20
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lda PPUSTATUS ; CPU:$810A PRG:010A AD 02 20
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bpl Reset_OnNonnegative ; CPU:$810D PRG:010D 10 FB
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dex ; CPU:$810F PRG:010F CA
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txs ; CPU:$8110 PRG:0110 9A
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ldx Zp2F ; CPU:$8111 PRG:0111 A6 2F
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ldy #$07 ; CPU:$8113 PRG:0113 A0 07
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sty Zp01 ; CPU:$8115 PRG:0115 84 01
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NMI handler at `$81AD`:
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pha ; CPU:$81AD PRG:01AD 48
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txa ; CPU:$81AE PRG:01AE 8A
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pha ; CPU:$81AF PRG:01AF 48
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tya ; CPU:$81B0 PRG:01B0 98
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pha ; CPU:$81B1 PRG:01B1 48
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lda #$00 ; CPU:$81B2 PRG:01B2 A9 00
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sta OAMADDR ; CPU:$81B4 PRG:01B4 8D 03 20
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lda #$02 ; CPU:$81B7 PRG:01B7 A9 02
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## Data-table inventory (Pass 3)
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- `$8000-$80FF` (256 bytes) - `CopyrightText`
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- `$82EA-$8309` (32 bytes) - `PlayerNameTable`
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- `$8827-$8875` (79 bytes) - `LevelHandlerPointerTable`
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- `$8BFD-$8C04` (8 bytes) - `BlockHeightTable`
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- `$8C3A-$8C69` (48 bytes) - `BlockPatternTable`
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- `$8FCF-$8FE3` (21 bytes) - `BlockShapeTable`
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- `$9017-$9066` (80 bytes) - `BlockLayoutTable`
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- `$9090-$9317` (648 bytes) - `BlockPlacementCode`
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- `$9344-$935D` (26 bytes) - `BlockAttributeTable`
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- `$943F-$99FD` (1471 bytes) - `BlockPointerTable`
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- `$9A2C-$9A96` (107 bytes) - `BlockColorTable`
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- `$9AB4-$9AC7` (20 bytes) - `BlockCountTable`
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- `$9C52-$9C5E` (13 bytes) - `BlockSizeTable`
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## Build
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```
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Byte-identical ROM verified.
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```
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