At first, it was a nice IBM 5160 computer. It was
unfortunately heavily upgraded, with replacing a mainboard in 1980s. The
mainboard was replaces with an 8MHz Taiwanese "Turbo XT" board and then
co-processor was added. Then, 320kB disk drive and SCSI hard disk were
added, with EGA graphics board as an addition to Hercules. This set-up
was used with multi-port serial board as a CAD station driving multiple
plotters to make a 6 copies of the same drawing at once.
Unfortunately this machine is not much 5160, and only casing survived.
|ROM||IBM BIOS Clone|
|Mainboard||Success Turbo640 8MHz (TH99)|
|Graphics||EIZO Enhanced MDA MD-B05
Paradise EGA (TH99)
|Ports I/O||Seagate ST01 SCSI (TH99)
Decision 8801 8xRS232
|System expansion bus||8x 8-bit ISA slot|
|Floppy/removable media drives||1x 3.5" 1.44MB floppy
1x 5.25" 360kB floppy disk drive
|Hard disks/ATA devices:||Seagate 60MB SCSI|
Peripherals in collection:
|Dialogic modem board|
|Operating system(s):||MS-DOS 6.22|
My unit was bought from German company where it was
already upgraded with this 8MHz board. The company which bought it in
mid-1990s made lots of designs using CAD-D package, and had a few
plotters. This machine was then customized to drive 6 plotters
simultaneously - a Decision Systems board has been added and EGA board
to support this CAD package. The modem has been probably added later as
its the latest board in the set.
There are 2 BIOSes in the board. One is not used, and accessible with jumper. This crude hack has been made because the pirated version of CAD software needed specific version of BIOS to run multiple plotters without hardware dongle.
Important information about Seagate ST01 SCSI controller: Please don't use it if drive is not 100% verified and has no bad sectors at all. First of all, its SCSI compliance is quite limited. Second, if there is a bad sector, it will try until it reads garbage and then it will return this garbage as data.
|XT ROM 820816|
|XT ROM 860529|