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Ilia Sharin 2026-04-26 14:46:18 -04:00
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01_hardware/aga_a1200_a4000/aga_blitter.md
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@ -28,7 +28,7 @@ Think of it as a **hardware GPU for 2D raster operations** — years before PC g
| No rotation | Cannot rotate — must be pre-rendered in software |
| No 3D | No perspective, texture mapping, or Z-buffer |
| No chunky pixels | Operates on **planar** bitplanes only (1 plane at a time) |
| No colour blending | Pure Boolean logic — no alpha, no transparency gradients |
| No color blending | Pure Boolean logic — no alpha, no transparency gradients |
| Word-aligned width | Minimum operation width is 16 pixels (1 word) |
### How Software Uses It
@ -70,7 +70,7 @@ move.w #$0300, $DFF1FC ; BLT_FMODE = 10 (64-bit)
```
> [!IMPORTANT]
> FMODE must be set **before** loading blitter registers and starting the blit. Changing FMODE mid-blit causes undefined behaviour.
> FMODE must be set **before** loading blitter registers and starting the blit. Changing FMODE mid-blit causes undefined behavior.
## Width Calculation with FMODE