Com 1 will not work in DOS, works in Win98..FIC 503+

[Killrose]

I use this computer at work to program Motorola 2-way radios and pagers. I can't get the external com 1 port to work in DOS, but it works fine in Windows. System specs below.

FIC 503+
64mb pc100
K6-2 400MHz cpu
4mb Trident agp
CPI 33.6 modem
ensoniq snd card
Toshiba 12x cd
Seagate 4.3gig
Win 98 with service pk 1

I have downloaded and installed the latest 3-1 drivers, mini port driver, USB driver and the Pwr management driver.

Any ideas?

 

[HansXP]

What version of DOS? And what would those drivers have to do with whether it works in DOS?

 

[Killrose]

I guess what I mean by DOS is Windows re-start in DOS Mode. (Actually I know the problem is this POS 503+, but it's hard to find a good AT style BX/KT133a Mboard).

I have had it working in DOS Mode before, but then it won't work in Windows. (?). This is the external port we're talking about. And it's probably a simple item I may have missed.

 

[RobsTV]

Sometimes the Bios gets switched to Auto for the com ports.
Windows can fiqure it out, but not DOS.
Make sure to set it manually, Com1=3f8 IRQ4, Com2=2f8 IRQ3.
Make sure no other device like a modem is using those ports or IRQ's.

If it works in Windows, then there is nothing wrong with the boards hardware, and it is configured wrong.

 

[Killrose]

Com 1= 3f8 IRQ 4
Com 2= disabled
modem = 2f8 IRQ 3

Bios is set: Plug N Play: NO
Set Resources Manual, with 3,4,7 set as legacy/ISA

 

[SavageRainbow]

Try this in your DOSSTART.BAT file:

MODE COM1:9600,N,8,1

That should force COM1 active in DOS-mode, since you said it was with restarting in DOS-mode.

 

[Killrose]

SR, tried your fix, but it did not work. I must have imbedded something somewhere thats keeping this from working.

If replaceing this motherboard would fix it i'd do it. But i'm thinking there may be more to it than that. If I had a spare i'd try that as well, but I don't.