Archives of Genesis8 Amstrad Page from 1999 to 2020 about hardware





A new expansion card for Amstrad CPC by Ikonsgr (RAM and ROM)

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Ikonsgr is already the author of two expansion cards for Amstrad CPC:

He just released a new expansion card : multi purpose board : 512K RAM Expansion/32x Rom board/256K Ram+2X Rom board (a complement to his II) with the following features :

  • 512K RAM Expansion (default mode, should work with other boards too,like M4, DDI interfaces etc.)
  • 32X Rom board mode (supports both lower and upper roms)
  • 256K Ram expansion + 2X Rom board mode (supports both lower and upper roms)

You can see two videos of demonstration (the first one being already showned below) :




UniDOS v1.38 by Offset, the lord of the DOS to rule them all

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These last years several expansions allows you to use mass storage (USB or sd...) on Amstrad CPC, each needing a ROM to use it correctly.

And if you use two of these expansions, you will need to load two ROMs, so less RAM for your Amstrad CPC.

So Offset did write UniDOS and drivers to be able to use another expansion, needing only one ROM with features being the same whatever the expansion. Unidos can manage actually :

Offset also wrote UniDOS Cartridge Creator (v1.4) which is an utility to create Amstrad Plus cartridges equipped with a patched firmware which allows to add UniDOS and its DOS nodes. You can furthermore configure up to 30 additional tool ROMs (such as Utopia, Maxam, Protext..) in the cartridges (compatible with ParaDOS and Burnin' Rubber) without requiring a real ROM board. The tool also let you automatically download the latest UniDOS ROMs from the official web site.



mTCP by Michael B. Brutman, TCP/IP for Ms-Dos

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mTCP v2022-07-01 by Michael B. Brutman is a set of TCP/IP applications for personal computers running PC-DOS, MS-DOS, FreeDOS, and other flavors of DOS. mTCP needs a 8088 processor (or +),96KB to 256KB of system memory depending on the application, ms-dos v2.1 (or +) and a network card (Ethernet adapter, or a device emulating Ethernet) that has a "packet driver".



Amstrad CPC CRTC Compendium v1.2 by Longshot

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Longshot has released version 1.2 of the Amstrad CPC CRTC Compendium (July 2022) 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.

This version has 226 pages, whereas v1.1 has only 173.




W.I.P. Picogus by Ian Scott, give a G.U.S. sound card to your PC XT/AT

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If there is a Twitter account you should follow, it's Ian Scott who is working on a clone of the mythic sound card Gravis Ultra Sound with a Pico of the Raspberry foundation. Give some love to your Amstrad PC XT/AT ! Otherwise you can try to buy a real one, but you will have to sell your house first. For more informations you can go to Vogons.



Version v22 of the CH375 driver by FreddyV (USB mass storage on PC XT/AT)

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FreddyV is still working on the drive of the CH375 which permits to use USB mass storage on any PC XT and AT. The last version of the driver is v22, which was released the 30th June 2022 for PC XT. There is also a version for PC AT (286 and plus).

Retro Erik has done a video on the use of this USB-ISA card (see the Lo-Tech web page).

Retro Tech Chris has made a 3D model of a bracket for this ISA card.

See the thread on Vogons.




Using an USB drive on any PC XT-AT being an Amstrad PC or not

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Retro Erik has done a vidéo on the use of a USB key for mass storage on any PC XT or AT under ms-dos (see the Lo-tech web page).

FreddyV is working on a modification of the driver for better speed on a PC XT or AT. It will be easier then using a Compact Flash card with a XT-CF.

Retro Tech Chris has made a 3D model of a bracket for this ISA card.

See the thread on Vogons.




Adding an external Gotek to your Amstrad CPC by Rodrik

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Rodrik Studio has done two really interesting videos. The first was about adding an external gotek to your Amstrad CPC without needing to remove the three inch disk drive. And the second one is the following of the first : adding the gotek inside a 3D printed box preserving the look of the Amstrad CPC.




Mod Master XT v1.0 for your PC XT, listen to musical modules files

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The version 1.0 of Mod Master XT by FreddyV is available on Vogons.

This msdos utility lets you hear a lot of music modules formats on any PC even a PC XT (CGA), for example an Amstrad PC 1512/1640 or a PPC 512/640...



New graphic resolutions on Amstrad CPC by McArti0

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By modifying ROMs, McArti0 was able to obtain news resolutions on Amstrad CPC : 256x256 and maybe 1024x512 in an emulator like sugarbox.

He also wrote another thread on CPCWiki : CPC joining to VGA monitor by 5 wire interface which gives 512x464 in mode 2, complete with schematic and pinout.

In fact, you can reconfigure the CRTC chip in an Amstrad CPC and OS to use all 65 Kb of the video RAM. Amstrad can show a maximum resolution of 1024x512 at 25Hz (or 1072x480).



CPCDiskAdapter by LambdaMikel

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CPCDiskAdapter by Michael Wessel is an universal Floppy Disk Drive Adapter for the Amstrad CPC. It's a PCB which lets you connecting disk drives other than the standard Amstrad DD1 / FD1 drives to the CPC via the disk controller, which usually requires some floppy cable mods. Moreover, these mods usually fix the drive to either being CPC A or B drive.

With this adapter board, one can flexibly use the DIP switches to select 2 out of 3 possible disk drives, and flexibly determine which one is A or B. Moreover, no more (destructive) cable mods are required with this board.

The following drives can be used:

  • the standard Amstrad DD1 / FD1 3" floppy
  • standard PC 3.5" floppy (with READY signal if possible)
  • 5.25" floppy (with READY signal if possible)
  • Gotek floppy drive

If the drive does no emit the READY signal, then it can be "faked" by grounding the READY line with the corresponding READY DIP switch (this is a standard CPC floppy cable hack)

CPCDiskAdapter's PCB

disk drive cable

Amstrad CPC's disk drive tower

Amstrad CPC and disk drive tower




The MIDI converter (in python) by LambdaMikel is available

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The python converter of MIDI music files written by Michael Wessel in python is availabe. It let you play MIDI files on an Amstrad CPC with two hardware expansions :

Source of the MIDI player in Z80 assembly is available.




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