News for hackers. Stuff that matters.

A comment on The MOS 6502 and the Best Layout Guy in the World. Parent comment

Re:The MOS 6502 and the Best Layout Guy in the World by jonsen on Monday January 03, 2011 @04:21PM (#2064725)
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.
[ Parent | on HN ]
Re:The MOS 6502 and the Best Layout Guy in the World by pvg on Monday January 03, 2011 @04:29PM (#2064751)
I 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.

[ Parent | on HN ]
Re:The MOS 6502 and the Best Layout Guy in the World by forinti on Monday January 03, 2011 @08:04PM (#2065376)
The 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.
[ Parent | on HN ]
Re:The MOS 6502 and the Best Layout Guy in the World by rbanffy on Tuesday January 04, 2011 @04:24AM (#2066402)
The 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.
[ Parent | on HN ]
Re:The MOS 6502 and the Best Layout Guy in the World by wladimir on Wednesday January 05, 2011 @09:20AM (#2071004)
I 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.
[ Parent | on HN ]