Zilog System 8000

[Oliver Lehmann]

Alexandre Souza wrote:

>     Old computers with serial port? Take a look at the 1488 and 1489 chips, 
> they have to be supplied with +12 and -12 tensions. Don't forget old RAM 
> memories who uses -5 volts...

I'v +12 and -12V connected, but I doubt the Z80-SIOs are using this voltage.
RAMs are 2114 4K S-RAM - so no -5V...

-- 
 Oliver Lehmann
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