Blitter vertical size (15 bit height)
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 09 | 08 | 07 | 06 | 05 | 04 | 03 | 02 | 01 | 00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | H14 | H13 | H12 | H11 | H10 | H9 | H8 | H7 | H6 | H5 | H4 | H3 | H2 | H1 | H0 |
These are the blitter size regs for blits larger than the earlier chips could accept. The original commands are retained for compatibility. BLTSIZV should be written first, followed by BLTSIZH, which starts the blitter. BLTSIZV need not be rewritten for subsequent bits if the vertical size is the same. Max size of blit 32k pixels * 32k lines.