TNS MC

Also called Minifloppy computer.It was manufactured from 1989 by JZD AK Slušovice. The computer was inspired by or was successor to TNS SC. Hardware is based on U880D.Operating systems running on the computer: TNS-DOS(TurboDOS),CP/M.

This topic contains doubts or inaccuracies that need to be corrected. More information follows below.

Parts of this topic may be machine translated.

Cards

• CPU
• INT
• RAM 1M
• MAPF
• FDC 5 (5.25" drives, "minifloppy")
• BDL-L+ZIO (or is that a mistake? BootROM works with TVD!)
• SAXON

The TNC MC corresponds to the TNC GC, but instead of the 8" driver and the FDC III controller, the FDC5 controller is used (there are three changes: a jumper in the address decoder changes the address from the original base address 0x60 to 0x70, and a change in the values ​​of the two resistors that determine the amount of precompensation during recording )

BootROM

Boot loaders on TNS-MC computers are reported as "DMF1>" or "DMF3>". They boot the operating system from 5 1/4" floppy disks. The "DMF1>" bootloader is only for TNS-MC computers that are based on the TNS-GC, while the "DMF3>" bootloader is for

all TNS-MCs (including those based on TNS-SC).

The system is booted either by pressing the [0] or [1] key. This depends on which drive the system drive is inserted

diskette.

However, the system diskette for TNS-MC with these boot loaders cannot be used to boot the system on TNS-HC. Each of these bootloaders requires a different OSBOOT bootloader.

For TNS-MC/W, the system boots in the same way, provided the computer is not configured to autoboot from a Winchester disk.

The TNS-MC(/W) computer can be retrofitted with 8" drives. In this case, it is possible to use the INT module from the TNS-GC computer and boot the system in the same way as on the TNS-GC.

Inaccuracies/doubts related to the topic

Uncertain if the computer was derived from TNS SC or TNS GC.