Talk:Intel 8008

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[edit] 0.5 MHz?

I was pretty sure that the base clock for the 8008 was 1 MHz, and 1.6 MHz for the 8008-1. Unfortunately, my original documentation is in a packing case somewhere in the shed. Can anybody confirm?

In any case, just stating the clock is misleading. The fastest instructions on the 8008 took 20μs, and the slowest were 44μs. I'm pretty sure that this was the number of clock cycles. Groogle (talk) 01:48, 31 December 2007 (UTC)

My guess (I'm 42) is that your clock frequency numbers are the Ø₁ and Ø₂ two-phase clock supplied to the 8008, while the numbers in the article are the SYNC clock output from the 8008. Still, I'm not sure how 5T and 11T respectively (from the data sheet) would end up as 20 and 44 [some unit], as this is a factor of four, not two as one would have expected. Perhaps your "development system" used a single-phase clock at twice the frequency in order to generate the two-phase clock for the 8008 (which is then in turn divided by 2 into T-states by the 8008)? That would explain it. HenkeB (talk) 16:50, 13 January 2008 (UTC)

[edit] Instruction execution time

Was 8008 the first microprocessor ever to breach the microsecond barrier for execution of a singular machine instruction?Anwar (talk) 19:25, 7 May 2008 (UTC)

No. HenkeB (talk) 00:18, 8 May 2008 (UTC)