Hardware / Transteque / HC-100

Homepage

A 8 bit fixed disk MFM controller

It is immediately noticeable that this controller looks amazingly similar to the CTT Munich IT-805. But a look at the content of the BIOS shows that it is two years older (1989) and of different manufacturer.

The hard disk controller is a NEC 7261AD ceramic chip with 12 MHz.

System Resources

BIOS

The BIOS is basically of type 2764 or 27C64A, i.e. it is 8 KByte in size. The BIOS contains the following string:

(C) COPYRIGHT Transteque Co., Ltd. 1989, Ver. 2.03

After several attempts I found that the BIOS ROM chip was defective. With my GALEP 5 I simply burned a new BIOS to a M5L2764K-2.

Figures

Transteque, HC-100
Transteque, HC-100, BIOS VER 2.03

This Controller has it's own "HARD DISK FORMAT MENU". Please use this for LOW LEVEL FORMATTING (LLF)! Please note the slightly different start address; C800:6 instead of C800:5. See also here.

Transteque, HC-100
Transteque, HC-100 / PRE-FORMAT UTILITY
Transteque, HC-100
Transteque, HC-100 / PRE-FORMAT UTILITY
Start low level formatting with: ..... DEBUG (ENTER) -G=C800:6 (ENTER)

Start HARD DISK PARK UTILITY with: ... DEBUG (ENTER) -G=C800:9 (ENTER)
Transteque, HC-100
Transteque, HC-100 / PRE-FORMAT UTILITY

If the controller does not recognize the hard disk parameters at startup, the low level formatting starts automatically!

I have formatted a ST225 and a ST238 for test purposes and have not noticed any problems.

Manuals

Downloads