First post, by tpowell.ca
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- Member
Hello everyone,
So I discovered something today while trying to get a serial mouse working on my 486.
It would seem that older machines with serial port headers differed from the pentium era and up.
Basically, I thought I was losing my mind when all I was unable to get any serial ports working unless I used add-on serial cards.
I assumed the motherboards had a faulty UARTS ships, but after a 3rd motherboard, I figured something was wrong.
Ok, so here is how its different:
On most pre-Pentium (AT spec?) systems, the ribbon cable is wired as shown.
- Merlin: MS-4144, AMD5x86-160 32MB, 16GB CF, ZIP100, Orpheus, GUS, S3 VirgeGX 2MB
Tesla: GA-6BXC, VIA C3 Ezra-T, 256MB, 120GB SATA, YMF744, GUSpnp, Quadro2
Newton: K6XV3+/66, AMD K6-III+500, 256MB, 32GB SSD, AWE32, Voodoo3