3 ms·
The offsets were measured in bits rather than bytes? That must have been a lot of engineering work.
by afandian 10y ago
The offsets were measured in bits rather than bytes? That must have been a lot of engineering work.
- hansjorg 10y agoIf I remember correctly, the offsets were measured in words (16 bits on the M68k), and then you had scroll registers where you could offset with 0-15 pixels. This was complicated a bit since you only had two scroll registers, one for even and one for odd bitplanes. No idea how this was implemented in hardware.
- pjc50 10y agoNot particularly. Think of the display as a "stack" of monochrome one-bit-per-pixel images. Then bit offsets become completely natural.
- afandian 10y agoI was thinking in terms of word alignment and synchronisation issues.