3 ms·

I really should find mine. I got it for free off of a local computer store's junk table about 12 years ago. My understanding is that it's fairly uncommon, at le

I really should find mine. I got it for free off of a local computer store's junk table about 12 years ago. My understanding is that it's fairly uncommon, at least compared to the Imagewriter I/II. Would be cool to take the roms and try to write an emulator for it, though I think emulating the Laserwriter would be more valuable from a historical perspective, since it was so influential in desktop publishing (and one of those odd cases were the peripheral had a faster CPU than the computer it was connected to, much like the Commodore 1541 disk drive). Edit: And on second glance it's quite possible that 410's Z80 is clocked faster than the 6502 in the Apple II.

deleted 9y ago
[deleted]
Someone 9y ago
The CPU seems to have run at 4MHz (http://www.cpu-world.com/CPUs/Z80/NEC-D780C-1.html http://www.cpu-world.com/CPUs/Z80/NEC-D780C-1.html). However, I spot a 4.9152 MHz crystal on the photo of the PCB (a quarter from the left, halfway down) So, I guess it either is overclocked or (IMHO more likely) that that clock is divided into a 2.5MHz clock. Either way, I agree with you that it likely had a faster clock than the 1MHz of an Apple II. However (certainly if you can get around with 8 bit registers; it shifts a bit if you can use the 16 bit parts of a Z80) a Z80 has to be clocked faster (some people claim by a factor of about 2:1) than a 6502 to be faster (extreme example: a NOP takes 4 cycles on a Z80, 1 on a 6502) In summary, I guess this _is_ faster than the Apple II it was designed to connect to, but not by much.