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PC-XT Turbo

PostPosted: Sun Jan 29, 2017 8:33 pm
by KenG
I just bought this off of eBay:

DTK DATA-1000 Turbo XT clone

8088-2 ar 4.77 or 10 MHz
640 KB RAM
30MB Seagate ST-238 hard drive
1.2MB floppy drive
Datatech MFM controller
DTK HEXA I/O plus controller
Compudyne VGA800 video card

The computer give an error beep code but boots up. Code is long, short, long, short, long, short. Does this when stripped of all except video card. Anyone have an idea as to what is wrong?

I have tried several clock programs, but cannot access even after replacing the battery.

I paid less the $100, so it is still a good buy.

Re: PC-XT Turbo

PostPosted: Mon Jan 30, 2017 1:04 pm
by James
Per a Google search

DTK/ERSO XT BIOS

1 short Begin POST and End POST
1 long, 1 short Floppy Disk Drive or Controller Failure
Continuous short Parity Error in First 64K RAM
Continuous tone First 64K RAM failure
1 long Keyboard Failed or Locked, Interrupt or other system board error
*** long short, long short, long short Video Initialization Failure, or Invalid Video Switch Setting ***

My experience with old DTK Bios was they were the least compatible of the popular generic BIOS (eg AMI, Phoenix, Award). While I never had any issues with DOS, I had one machine that wouldn't run SCO Unix.

Re: PC-XT Turbo

PostPosted: Mon Jan 30, 2017 6:34 pm
by KenG
Thanks for the reply James. It was a dip switch setting. Whoever installed the VGA card must not have known to change it.

Do you know anything about the clock? Tried several utilities so far but no luck. Changed the battery, so I know it is OK.

Re: PC-XT Turbo

PostPosted: Mon Jan 30, 2017 7:18 pm
by James
As a XT class machine, does it even have a clock? Early XT class machines had no CMOS or built in clocks. Later XT class machines, such as the IBM PS/2 model 30 (8086), had clocks.

Re: PC-XT Turbo

PostPosted: Mon Jan 30, 2017 8:47 pm
by KenG
The HEXA I/O plus card has a clock.

Re: PC-XT Turbo

PostPosted: Tue Jan 31, 2017 6:46 am
by James
Perhaps one of these might work. Like everything on the internet I would scan them with a DOS Virus Scanner before using it.

http://minuszerodegrees.net/rtc.htm

Re: PC-XT Turbo

PostPosted: Tue Jan 31, 2017 11:16 am
by KenG
Thanks, I will try them when I have some time. I have found a bunch of them. I will just have to keep trying until I find one that works.

Re: PC-XT Turbo

PostPosted: Tue Jan 31, 2017 12:42 pm
by MikeModified
Jumper 1 selects clock1 or clock2? That's seems strange.

Mike

Re: PC-XT Turbo

PostPosted: Wed Feb 01, 2017 7:01 pm
by KenG
I haven't figured out the clock yet, but I got a Sound Blaster Vibra 16 today. With the help of a utility from vcfed.org, I got it running. VGA graphics and Sound Blaster sound. This is how first PC compatible was.

Re: PC-XT Turbo

PostPosted: Sat Feb 04, 2017 11:41 am
by Trixter
KenG wrote:This is how first PC compatible was.


This is how YOUR first PC compatible was. Mine was CGA and speaker ;-) (although I did have a 640x400 mode and 8MHz 8086 on my clone)