15 Mar
1999
15 Mar
'99
11:43 a.m.
<I was joking when I said real-time clock since I thought the PC came with
<a real-time clock. Is this not the case? Hmm, come to think of it, I
<guess not since I don't see a battery on the MB of this 5150 here.
Yep, XT class machines didn't have a TOY CLOCK (TOY is time of year), All
the had was a periodic timer interrupt and when you power off so goes
the date. Hence the stuff like smart watch.
A multi-io card was typically 2 serial, joy stick. either a FDC interface.
Most were commonly two serial on one card, a Video and Parallel on another
with FDC being stand alone or paired up with the HDC. Clocks were commonly
the smart scoket under the bios roms.
I have many examples of those here.
Allison