noone_youknow

10 ms·

91.
by noone_youknow 6y ago
Fair point, but I happen to have a few thousand ATF16V8BQLs in stock, so I'm not worried for the time being :) Originally (on breadboard) the project didn't use any programmable logic, but board space dictated that I switch to the
92.
by noone_youknow 6y ago
I used to feel that way, until I replaced about ten 7400 series in my address decoder with one 16v8 that costs around a dollar and frees me from propagation delay concerns... YMMV of course :)
93.
by noone_youknow 6y ago
I think Gibbon1 has hit the nail in the head in reply to this - it makes the instruction encoding smaller. It also allows the registers to be treated differently on-chip. Combined, this makes stuff like the register indirect with offset add
94.
by noone_youknow 6y ago
MMU is optional, unless you want virtual memory. The 68010 fixes a bug in the 68000 whereby it didn’t stack enough information to recover from an address or bus error, but you still need an MMU if you want to actually do virtual memory in a
95.
by noone_youknow 6y ago
Designer of the rosco-m68k (which was mentioned in another comment - thanks!) here, always good to see another 68k SBC on the block. Looking forward to seeing how this evolves, would be especially nice to make it so $0 isn’t permanently a R
96.
by noone_youknow 7y ago
I started building this in January and am at the point of sending out for prototype PCBs: https://github.com/roscopeco/rosco_m68k - MC68010-based single-board computer I can really recommend a project like this as the
97.
by noone_youknow 7y ago
Software developer here who’s also been through mental health issues and periods of homelessness in the past, the company I work for is aggressively hiring and already has offices in, I suspect, the same rainy northern city you speak of. Dr