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maximum number of ports on XT 5160
Name: homerj Date: July 22, 2003 at 18:18:51 Pacific OS: dos 3.3 CPU/Ram: 8088@4.77mhz/640kb
Comment:
I want to add a 9-pin serial mouse to my IBM PC-XT 5160. in order to do that, I need to add a 9-pin serial I/O board.is there a maximum number of ports that a PC/XT 5160 can have? it al ready has ram card with a serial port and a parelell port connected to that.Can I still add more ports? It has a 64/256kb mainboard. the configureation is two full hight floppies, 256kb ram on maibnboard with 384kb on ram card, which is 640kb.
Name: SkipCox Date: July 22, 2003 at 18:43:50 Pacific
Reply:
Should be able to run at least 4 serial ports at once with an addon card. It's a matter of running out of IRQ's to configure ports not the actual hardware.
Look to a company like SIIG for a good card.
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Response Number 2
Name: wizard-fred Date: July 23, 2003 at 06:34:54 Pacific
Reply:
Practically you have only 8 interrupts total. Usually COM1 and COM3 share IRQ4, COM2 and COM4 share IRQ3. Usually only 2 serial ports are used at any given time.
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Response Number 3
Name: homerj Date: July 23, 2003 at 10:26:29 Pacific
Reply:
just found a card. it had a parelell port, a 9-pin serial, and a 25-pin serial. I disabled the 25-pin serial and the printer port. so im just adding a 9-pin.
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