@pulkomandy@mastodon.tetaneutral.net
Post #2487170
2026-04-25 11:07 UTC
Today update to my m68k quickreference page: added info about the exception stackframes format for 68000, 68010, and the SCC68070 which does its own thing.
I guess the next thing thould be instruction encoding (but GoldenCrystal already has a nice one-page pdf for that) and instruction timings (especially for the SCC68070 which again is very different). And maybe check and mention any 68hc000 or 68ec000 differences
Replies (1)
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@pulkomandy@mastodon.tetaneutral.net 2026-04-25 11:10
NXP doesn't really have a good, complete reference: the SCC68070 isn't even their design, but also the reference manual removed details about the older designs when adding new ones, so you have to compare the version including the 68040 and CPU32 with an older one that clearly separates the base 68000, the ec and hc versions.