Questions tagged [cpc464]

For questions regarding the Amstrad CPC464 Z80-based microcomputer.

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5
votes
1answer
342 views

How was text handled on the Amstrad CPC 464?

The three official video modes described on the CPC wiki are all bitmap modes, and this page mentions that the "screen is bitmapped. You must draw/erase your own sprites and text." So what was the ...
10
votes
2answers
814 views

Why could you hear an Amstrad CPC working?

I had my first programming experience in the late 80s / early 90s on a Schneider (Amstrad) CPC 464 in Basic. I remember that when a program was running, depending on the current workload of the ...
6
votes
1answer
394 views

Common practices of programming the AY-3-8910 on Amstrad CPC: via Firmware routines or directly?

I'm starting to learn how to program in assembly (z80) on the Amstrad CPC computer. As an high level developper i find it pretty fun and i learn a lot of things about computer and CPU architecture. ...
8
votes
1answer
130 views

cbm prg studio for the Amstrad

CBM prg studio is brilliant. I have searched Google for a version (or something similar) for the Amstrad CPC 464, to no avail. Does anyone know of one?
5
votes
1answer
186 views

Amstrad CPC 464 tape deck loads, but makes grinding scratching noise

I'm concerned about an Amstrad CPC 464 tape deck, which loads, but makes grinding scratching noise while rewinding, fast-forwarding and play. Sometimes it does load silently, but after a subsequent ...
19
votes
1answer
770 views

Which computers had features added purely for tax reasons?

I was recently reading about the Amstrad CPC 472, which was a CPC 464 with an extra, unusable 8KB of RAM added to avoid Spanish import fees on computers with 64KB or less. Did any other computers have ...
10
votes
1answer
472 views

Why CPC464 display is less stable while reading from cassette?

Context The Amstrad CPC 464 has a very stable RGB video output. By "stable" I mean that the image on the CRT monitor does not move, wiggle, shake in any way. The electron beam draws every pixel ...
14
votes
1answer
575 views

Memory sharing mechanism in the Amstrad CPC computer

In the Amstrad CPC464 (and I guess it's the same for CPC664 and 6128), the CRTC and the gate array work together to build the display image: every microsecond, the CRTC puts a memory address and a ...
16
votes
1answer
3k views

Is it possible to use an Amstrad CPC464 with a modern monitor or TV

During a recent move I lost the monitor for my Amstrad CPC464. Is it possible to adapt the output of this to work on a modern monitor or on television set?