3 ms·
I believe the 6502 could do things faster than the Z80. I once implemented the exact same program on a 6800 and a Z80. The 6800 is very close to the 6502. Speed
by jonsen 16y ago
I believe the 6502 could do things faster than the Z80. I once implemented the exact same program on a 6800 and a Z80. The 6800 is very close to the 6502. Speed wasn't an issue, but the Z80 version was noticeably bigger. And also felt more quirky to program.
- pvg 16y agoI believe the 6502 could do things faster than the Z80. Right, I was hoping someone might remember specifics. I don't think this is really true, in general. The 6800 is very close to the 6502 Not really.
- forinti 16y agoThe 6502 was faster at accessing memory. I remeber Elite running a lot better on a 2MHz BBC Micro than on any 3.58MHz Z80 based micro, like the MSXs.
- rbanffy 16y agoThe MSX 1 also had a hideous design flaw (for a gaming machine) that hid the framebuffer from the processor. IIRC, you had to do a couple IOs to get a single byte to or from the VRAM.
- wladimir 16y agoI remember the MSX2 had exactly the same flaw, it had a bigger video memory and some 2D acceleration primitives, but the access method was the same, through vpoke/vpeek.