Posted By
MMS
on 2018-11-10
16:49:39
 |  Re: what is all the fuss about the plus4 not having hardware sprites?
nope, 6502 is CISC processor, with some really complex addressing command too.
8501 can keep up with a 4MHz Z80. When the screen is off.
Unfortunately due to shared memory (CPU and TED should reach the same locations in RAM), it sigificantly reduces the machine's speed.
But it is not so bad, the Plus/4 is rather capable and responsive machine.
SAM Coupe has a 6MHz Z80 CPU, and cannot manage properly it's screen (had some very nice formats), but very hard to manage scrolling or fast moving objects.
Beause of wait stages the machine was only 10% faster than the ZX Spectrum.
It was expected to be a "8 bit Amiga", Z80 fans waited for it like a messiah, but nope... Unfortunately.
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