[BBC-Micro] Reversing the Tube ULA (destructively)
jules.richardson99 at gmail.com
Thu Oct 28 03:31:24 BST 2010
> John Kortink wrote:
>> Yes. But properly implementing nDACK can be more involved
>> (depending on the logic chip) due to timing issues. Maybe
>> the ARM evaluation system uses it.
> No, tied to +5v.
Ditto for the 80286 copro.
The interesting ones might be the Springboards (can't tell from my photos,
sadly - I never took snaps of the underside of the boards) and the A500 "copro
version" as they may have done things differently.
More information about the bbc-micro