On 07/03/2012 08:40 PM, Dave McGuire wrote:
On 07/03/2012 02:11 PM, Johnny Billquist wrote:The 6502, which was the popular contemporary CPU to compare against, did do about one instruction per clock cycle, which is why there was somewhat of an equivalence between a 4 MHz Z80 and a 1 MHz 6502.The 6502's register starvation negated a lot of that performance gain, however.
Clever use of zero page could solve much of that. Not unlike the Nova which also had a fast-lane for zero page. -- Ragge