Monitor compatible

The following computers can be connected to the usual Amstrad CTM644 (or the unusual CTM640/CM14) monitors:

• Tatung Einstein (through resistors to lower the R-G-B signals' voltage; pins must be reasigned; and horizontal focus position must be realigned)
• BBC Model B (may need resistors? I think the signal is too much strong, but it seems to work ok...)
• BBC Master (may need resistors? I think the signal is too much strong, but it seems to work ok...
• Spectrum +3 (through resistors to lower the R-G-B signals' voltage; pins must be reassigned)
• Spectrum +2A (through resistors to lower the R-G-B signals' voltage; pins must be reassigned)
• Sinclair QL (through resistors to lower the R-G-B signals' voltage; pins must be reassigned)
• RFT Kc-compact (pins must be reassigned)
• Patisonic Aleste 520EX (pins must be reassigned)
• Camputers Lynx 48k (pins must be reassigned, and horizontal focus position must be realigned)
• Oric 48k/Atmos (pins must be reassigned)
• Enterprise 64/128 (pins must be reassigned, and R-G-B brightness must be re-set for each colour)
• Exeltel Exelvision (pins must be reassigned)
• Amiga range computers
• Atari ST computer range (with adaptor cable)

As a general rule, you will be able to connect computers with RGB video output *and composite sync*. Therefore, it is possible that the following computers can be connected to an Amstrad monitor:

• Thomson MO5 (probably)
• Didaktik M48
• Radofin Aquarius with SCART connector (french Aquarius)
• MGT Sam Coupé (probably)
• MSX Computers (probably)
• French Sega SC-3000x computers
• Acorn Electron
• French Mattel Intellivision with SCART output
• French CBS Colecovision with SCART output
• French Atari 7800 with SCART output

A classical way to get other computers running on a CPC monitor is to use the scart/Peritel port from a MP-3 TV tuner.

Amstrad's CPC monitors were basically cheap TV screens lacking the tuner... So any machine able to run on a TV could be used on those.