semi-homemade micro

[Gordon JC Pearce]

Chuck Guzis wrote:
> On 11/14/2005 at 5:57 PM Jim Battle wrote:
> 
> 
>>>"The PDP-8 was a 12-bit computer with 4096 words of memory. It had only
>>
>>eight 
>>instructions, one full register, the accumulator (AC), and a single-bit 
>>register, the link (L) bit. The machine operated at a clock rate of 1 MHz,
>>and 
>>took  10 clocks for each instruction, so that it ran at 0.1MIPS."
> 
> 
> Time to add some commentary to the wiki, methinks.
> 
> IIRC, the cycle time of the original straight 8 was 1.5 usec.  Instruction
> times in cycles is given here:
> 
> http://www.cs.uiowa.edu/~jones/pdp8/refcard/65.html

That seems to line up with the PDP8 manual I have.

Gordon.