[Coco] CPU speed in MIPS

Diego Barizo diegoba at adinet.com.uy
Thu Apr 19 21:59:34 EDT 2007


I've got a few numbers from the wikipedia, but most are of "modern" CPUs
I know about the issues that comparing MIPS present, but I don't think 
that there are many ways to compare computers from the 80s.
Anyway, I did some BASIC tests, and came up with some unexpected results


	FOR to 10000 	A+1 to 5000 	? “A”*1000 	Goto next 5000 	Gosub 	IF/THEN 
Average
Tandy 1100 	7 	10 	21 	5 	7 	10 	10
CoCo2 Poke 	11 	18 	7 	8 	11 	30 	14.17
CoCo3 Poke 	11 	16 	15 	9 	13 	24 	14.67
Vic-20 	13 	42 	20 	9 	14 	32 	21.67
Apple //c 	13 	31 	21 	10 	13 	32 	20
CoCo2 	15 	24 	10 	11 	15 	40 	19.17
CoCo3 	22 	31 	31 	19 	26 	47 	29.33
Atari 800XL 	24 	26 	20 	20 	25 	22 	22.83
Model III 	27 	38 	24 	21 	29 	36 	29.17
Model 100 	32 	39 	50 	20 	24 	36 	33.5


Surprisingly, the high speed poke turns a sluggish CoCo into a PC killer 
(The T.1100 laptop)
The poor rating on the Print test for the CoCo 3 is because I used one 
of the hi-res text modes.
But anyway, the CoCo3 seems slower than a 2. Might be because the 3 is 
always in "all RAM"?

Diego




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