Commodore PC10-III

More Images: Image1 Image2

I acquired this computer in an interchange marked, where I changed a juice-machine for this pretty good computer.

It came with all options: Green Hercules monitor, and a mechanic IBM keyboard.

Hardware

Computer

XT or XT/370

CPU

Physical: SIEMENS SAB8088-1-P / Reported: 8086-4.77

Coprocessor

None

BUS

ISA8

Memory

640Kb

Video

Hercules Graphics, integrated in mainboard. Also supports Color Monitor and TV output (Composed Video, black and white).

Disk Controller

Integrated in mainboard.

Floppy Drives

• A: 5 1/4" 360Kb. Manufacturer: Sankyo
• B: 5 1/4" 360Kb. Manufacturer: Sankyo

Hard Disk

Western Digital model WD93028-X, 21Mb, 28/12/89

Port Controller

Offers a Serial (8250), a Parallel and a Game Port, integrated in mainboard. It also reports MOUSE port (023Ch) at boot process.

Serial Ports

	Address	UART	Speed	Format	IRQ
COM1	03F8	8250	2400	8N1	4

Parallel Ports

	Address	IRQ
LPT1	0378

Keyboard

84 Keys Support, DIN Connector.

Power Supply

Manufacturer: PHIHONG ; Model: DPS-145BB ; 230V, 50Hz, 100W ; Out: 75W

	Voltage	Current
INPUT	240V AC 50Hz	0.8A
INPUT	120V AC 60Hz	1.6A
OUTPUT	+5V DC	5.8A
OUTPUT	+12V DC	3.5A
OUTPUT	-12V DC	0.3A

CMOS Battery

VARTA, soldered.

Mainboard configuration

There are many jumpers in the mainboard, but I don't know at all what do they set up. If anyone knows, please write me.

Software

BIOS

Commodore PC BIOS Rev. 4.35 / 318 085 - 01

Operating System

MS-DOS 3.20 (Spanish)

Drives

• Drive A: 360Kb
• Drive B: 360Kb
• Drive C: 21.309.440 bytes (FAT16)

This computer has some specific software (look for speed.exe in details). I'll soon put it here for download (I actually don't have any other acces to my box than through serial line)

Files

These files can give more detailed information about the computer and its configuration, and also some benchmarking.

• Snooper's log
• Commodore PC10-3 system utilities
  • edisk.com
  • edrive.sys
  • keybsp.com
  • setclock.exe
  • speed.exe
• Utilities Disk, Disk 2 of 2. Includes GW BASIC 3.21. Original. 18 Dec 1987
• Autoexec.bat
• Config.sys

Details

It doesn't have CMOS.

It has only one IRQ controller (IRQs from 0 to 7).

It reports the RTC port (02C0h) at the boot process.

The system runs at 2.2MHz (benchmarked) by default. This is the normal system speed. Anyway, you can change this system speed using this program: speed.exe (see Files). It lets you choose between these modes:

-s

2.2MHz

-t

3.3MHz

-d

4.4MHz

A copy of the MS-DOS 3.20 can be found in the Old Software page.

I've used a 1200 baud internal modem with this computer, and it worked perfectly.

At the time of doing the tests and getting information about the computer (i.e. Snooper's log), it hadn't the B: floppy drive. I had used it in some other computers, in order to get access to 5 1/4" 360Kb floppy disks. This was the first 5 1/4" FD I had.

Torsten Urban has told me that the computer had its own keyboard. It had keys for setting the speed of the computer. I used the utility SPEED.EXE for setting the speed... He says the keys sent special character sequences, but he can't remember which ones. I saw some 486 computers that used the combination CONTROL-ALT-KEYPADPLUS and CONTROL-ALT-KEYPADMINUS. I haven't tested those key combinations in my Commodore.

Started 04/08/2001 / Updated 2003-03-03 11:11:19.000000000 +0100

[top] [home] [Software utilities]