8800micro speed compared to real 8800?

Discuss the new Altair 8800 Micro

8800micro speed compared to real 8800?

Postby waltermixxx » Apr Thu 16, 2015 3:29 pm

hi there, just wondering, i read some posts regarding 16mhz crystal vs 20mhz crystal. Firmware version 5.2 being much faster than 5.1.

just wondering where the system is currently ( having just purchased one... ). This is more for my interest than for anything else, I wont be crunching numbers or anything :)

So the question is, with the default 5.1 and a 16mhz crystal, what % of the speed is the Briel 8800micro vs the Altair 8800.
Does the firmware upgrade to 5.2 affect the speed of the 8800micro's emulation in general ( the % number in my first question )? or did it just increase the speed for loading disk images on the 88-DSK RAM Drive.

Another question, when i read the manual, i got the impression that I could not use the sd card for saving my basic programs? and that i could only dump blocks of memory?
( I think i have more reading to do... ) :) but inf anyone could answer the above questions that would be great. :)
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Re: 8800micro speed compared to real 8800?

Postby Tor6502 » Apr Fri 17, 2015 12:04 pm

The product page says "emulating 8MHz processor", so it certainly runs a bit fast compared to the original (2 MHz).
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Re: 8800micro speed compared to real 8800?

Postby waltermixxx » Apr Fri 17, 2015 12:40 pm

HOW did I miss that....

thank you :)

And yes it does load the whole 32k when loading bins. :) which is totally cool :)

cheers.
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Re: 8800micro speed compared to real 8800?

Postby mikedoug » Apr Sun 19, 2015 3:05 pm

Actually, the 8800micro emulation runs closer to the speed of a 1.35mhz 8080. See viewtopic.php?f=23&t=596
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Re: 8800micro speed compared to real 8800?

Postby waltermixxx » Apr Sun 19, 2015 8:31 pm

That thread was what I was eluding to in my first post :). It's also pretty old with no update. I was hoping there was an update on speed, or perhaps even a drop in replacement AVR running at a higher speed... :) But it's not important, I would be cool though... :) Thank you for your reply :)

Cheers.
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Location: Toronto, Ontario


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