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Results tagged with z80
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user 75
The Zilog Z80 microprocessor. Prefer [game-boy] instead for questions about the Game Boy CPU nicknamed the ‘GBZ80’.
20
votes
Accepted
When were the various frequency Z80 CPUs introduced?
The Zilog Z80 (2.5 MHz) was introduced in 1976.
In 1977, the Z80A (4 MHz) was available for $65 for the ceramic package and $59 for the plastic version. …
- 17.6k
13
votes
Comparing raw performance of the Z80 and the 6502
These UCSD Pascal benchmarks of an Eratosthenes Sieve Prime Number Program show that the 6502 is roughly 2x as efficient per clock cycle as the Z-80, 8086, and 8088.
For posterity, here's a partial l …
- 17.6k
55
votes
Did any computers use the Z80B?
Sam Coupé
Osborne Executive
Panasonic FS A1 WX (MSX)
Sharp MZ-2500 (SuperMZ) series
Vector Graphics Vector-3 (VIP)
Upgrades to the Z80B were available for some computers:
Acorn Z80 Second Processor …
- 17.6k
24
votes
How much did the 6502 and Z80 cost?
The MOS 6502 (1 MHz) was introduced in 1975 for a price of $25. Then in 1978 MOS agreed to sell the 6502 (1.79 MHz) and an IO chip to Atari for $12 per set (because the production cost was $4).
In 19 …
- 17.6k