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Ilia Sharin 2026-04-26 14:46:18 -04:00
parent 5fac29ccd5
commit 8133b3a6cb
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01_hardware/ecs_a600_a3000/chipset_ecs.md
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@ -48,10 +48,10 @@ lsr.w #8, d0 ; shift to get Agnus ID in low byte
ECS Denise adds to OCS Denise (8362):
1. **BPLCON3** — new control register for border colour, sprite bank
1. **BPLCON3** — new control register for border color, sprite bank
2. **Sub-pixel scrolling** — additional scroll control bits
3. **Genlock extensions** — improved external sync handling
4. **Border blank** — BPLCON3 can blank the border area to colour 0
4. **Border blank** — BPLCON3 can blank the border area to color 0
### DENISEID — Revision Register
@ -74,10 +74,10 @@ move.w $DFF07C, d0 ; read DENISEID
New register at `$DFF106` (ECS only, must not be written on OCS):
```
bit 15-13: BANK2-0 — sprite colour bank (AGA: upper 4 bits of colour reg)
bit 12-10: PF2OF2-0 — playfield 2 colour offset (for dual playfield)
bit 9: LOCT — low colour enable (AGA HAM8 mode)
bit 6: BRDRBLNK — border blank: forces border area to colour 0
bit 15-13: BANK2-0 — sprite color bank (AGA: upper 4 bits of color reg)
bit 12-10: PF2OF2-0 — playfield 2 color offset (for dual playfield)
bit 9: LOCT — low color enable (AGA HAM8 mode)
bit 6: BRDRBLNK — border blank: forces border area to color 0
bit 5: BRDNTRAN — border not-transparent (disable border transparency)
bit 4: ZDCLKEN — horizontal/vertical count display
bit 3: BRDSPRT — sprites in border area enable