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RS 128

Memotech (United Kingdom)

Previous: MTX 512
Visits: 1
Name RS 128
Manufacturer Memotech (United Kingdom) Type Desktop
Production start (mm-yyyy) 1984 Production end (mm-yyyy) -
RAM 128KB + 16KB VRAM ROM 24KB
CPU Z80A - 4 Mhz
Operating System MTX BASIC, Assembler & MTX NODDY
Text (Cols x Rows) 40x24
Graphics 256x192@16 colors; 32 sprites
Sound 4 channel sound (3 independent voices plus pink noise)
Storage memory Cassette
Serial port Two ports RS-232 Parallel port Compatible centronics
Others port Two joysticks ports, monitor output (Composite Video)
Original price   Currency original price
Units sold
Note This is basically an Memotech MTX 512 with the added serial board, and the expansion board with 64Kb (used like RAM Disk).
This two boards allow connect the FDX unit (two 5 1/4" and 500Kb floppy disk drives). The data are sent from the disk to the Disk RAM at 9600 bps.
The FDX unit comes with a 80 columns card and allows the RS128 to run CP/M programs. 
Configurations The graphics capabilities are provided by the TMS9918A series video chip from Texas Instruments (same on MSX machines).
The PSG is also from Texas Instruments: the SN76489A.
The MTX NODDY are a interactive screen manipulation routines.  
User juanvm

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