The Memotech RS128 is the successor of the Memotech MTX 512. It looks like the MTX 512 and has almost the same characteristics.
Like the MTX 512, it sports an aluminum case. Contrary to the MTX, it has RS-232 built-in interfaces, primarily used to connect the FDX floppy drive (the data are sent from the disk to the RAM at a whopping 9600 baud!). The FDX unit comes with a 80 columns card and allows the RS128 to run CP/M programs.
It was supplied with NewWord (word processor) and SuperCalc (spreadsheet).
Only the lower 64 KB can be used, the upper 64 KB are used as a RAM disk.
Similar the MTX512, the RS128 has characteristics very near of the MSX computers (same sound chip & video for example) but wasn't able to use MSX software.
BUILT IN LANGUAGE
MTX Basic, Noddy, Assembler
Qwerty full-stroke keyboard, 79 keys. Numeric keypad. 8 function keys.
Zilog Z80 A
TMS-9918A video chip from Texas Instruments. SN-76489A sound chip from Texas Instruments
128 KB (up to 512 KB)
24 KB (Basic + assembler)
40 x 25 / 32 x 24
four modes, maximum : 256 x 192
3 voices / 6 octaves
TV output, composite video output, 2 x joystick, Cardridge, Tape, Audio, Centronics, 2 x RS232, Bus