News about Amstrad CPC, PCW, Notepad NC100 NC150 NC200, PDA600 and also Amstrad PC






Replacing the original sound chip of the Amstrad with an AY-3-8912 clone by vRetro

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Seen on CPCWiki, it is possible to replace an AY-3-8912 original sound chip (originals for sell are costly) by a replacement chip created by vRetro Design (better to put the chip in a socket after removing the original) : AY-3-8912 functional equivalent for 25 euros.

There is another replacement chip : AY-3-8912A-TS (Turbo Sound) but contrary to what was thought at the start of the CPCWiki thread, it isn't usable on an Amstrad CPC. It's only for ZX Spectrum and it offers 2 AY instead of one.

The clone had a timing problem but it has been corrected by vRetro on the 12 October 2023 as announced by SerErris.





Amstrad CPC CRTC Compendium v1.6 by Longshot (July 2023)

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Longshot has released version 1.6 of the Amstrad CPC CRTC Compendium (July 2023) which is a documentation about the CRTC 6845 (and some others circuits). Note that the CRTC is a generic component used in several computers including the IBM PC.

It is possible to check if an emulator is good with the SHAKER tests by Longshot. SHAKER is a program designed to run on CPC machines produced by AMSTRAD in the 80s-90s. The objective of this program is to carry out extensive tests on the video circuits of this machine. These video circuits are the GATE ARRAY and the CRTC 6845. AMSTRAD produced several series of GATE ARRAY and used CRTC models produced by different manufacturers (HITACHI, MOTOROLA, UMC, AMSTRAD). This has been causing compatibility problems on operations that exceed the functional specifications of these circuits. The identified CRTCs are numbered from 0 to 4.



Memory Full, history of the Amstrad CPC demo scene by Hicks (soon)

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Informations about the availability (24th September 2023) of Memory Full, history of Amstrad CPC demo scene by Hicks : all the work will be sent to the printer this week, and you will received a message as soon as the shipping delay will be known. Then 80 kilogrammes will need to be shipped by the post office.





History of the Amstrad CPC by Génération Micros in three parts (french)

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Génération Micros made three videos about the history of the Amstrad CPC (french) :

Other videos are about individuals games, I invite you to check them too.



New games for DOS and Amstrad CPC by the New Retro Show

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Looking at videos on Youtube, I stumbled on the New Retro Show and two of his series of videos :

One nice game in the video is Cara Grabs Antimatter which is playable on the page (finished it in 11:22 with some time off keyboard). The game is using CGALIB by Cyningstan, a library for Open Watcom C.

A good part of the DOs games showed will work on CGA and 8086 processor.



Using an Amstrad CPC 464 keyboard as an USB one with a Raspberry Pico by Lee Smiths Workhshop

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Lee Smiths Workshop has done a video to use a retro keyboard (including an Amstrad CPC 464) as an USB Keyboard thanks to a Raspberry Pico. The code is available on this Github.