Amstrad CPC6128
Amstrad CPC6128



Setname:  cpc6128   
Year: 1985
Manufacturer: Amstrad plc
Status: good  works
Type: Home Computer
Parent: Amstrad CPC464
Emulation info
Overall emulation:  good   
Color emulation:  good  
Sound emulation:  good  
Graphics emulation:  good  
Savestates:  unsupported   

Tech info
 Base hardware: (available in all slot configurations)
Z80 ("maincpu")cpu 4000000 Hz
Speaker ("mono")audio
Wave ("wave")audio
AY-3-8912A ("ay")audio 1000000 Hz
Screen ("screen")raster horizontal 704 x 144 @ 50.080128
Media devices
snapshot ("snapshot") snapshot dump sna
cassette ("cassette") cassette cass wav, cdt
RAM options
64K 65536
128K 131072
320K 327680
576K 589824
Software lists

 Optional hardware: (available with specific slot configurations)

 Configure the slot options for cpc6128:
 Slot Value

Show detailed info about 'Configurations' of this system

Manufacturer Name Isp
TV Refresh Rate 60 Hz
 50 Hz
Monitor CTM640 Colour Monitor
 GT64 Green Monitor
Joystick port device 2-button Joystick
 AMX mouse interface

Show detailed info about 'Slot Options' of this system
Slot options

NameValueCompatible device(s)
centronics ap2000ap2000
 printer centronics_printer
exp amdrumcpc_amdrum
upd765:0 3ssdd floppy_3_ssdd
upd765:1 3ssdd floppy_3_ssdd

Romset info
ROM NameSizeCRC32SHA1Dump StateBIOS option
cpc6128.rom32768 9e827fe15977adbad3f7c1e0e082cd02fe76a700d9860c30good
cpcados.rom16384 1fe22ecd39102c8e9cb55fcc0b9b62098780ed4a3cb6a4bbgood


* CPU: Zilog Z80 4 MHz
* RAM: 128 kb (2 banks of 64ko)
* VRAM: 16 kb
* ROM: 48 KB
* Text Modes: 20 x 25 with 16 colors, 40 x 25 with 4 colors, 80 x 25 with 2 colors
* Graphic Modes: 160 x 200 with 16 colors, 320 x 200 with 4 colors, 640 x 200 with 2 colors
* Colors: 27
* Sound: 3 channels, 7 octaves +1 noise channel
* I/O Ports: Printer port, Expansion port, 1 Joystick plug (Atari standard), Floppy Disc Port, DIN plug for Amstrad monitor, Headphone / Sound stereo jack output, DIN plug for external tape recorder
* Keyboard: All grey QWERTY / AZERTY mechanical keyboard. Numeric keypad with arrow keys
* Built In Media: 3" disk-drive built-in


MESS currently emulates two versions of this computer

* cpc6128 [Amstrad CPC6128]
* cpc6128f [Amstrad CPC6128 (France, AZERTY Keyboard)] - same as the above, but different keyboard (as sold in France)

Both drivers support emulation of the CPC 6128 with one "cassette" (cass) device and up to two floppy drives, "floppydisk1" (flop1) and "floppydisk2" (flop2). The former one supports tapes in .wav and .cdt format; the latter ones support disk images in .dsk format.

Also notice that a "snapshot" (dump) feature is available for .sna files and that the "printer" (prin) is emulated as well.


This system requires full keyboard emulation to work correctly. At startup, full keyboard emulation mode is enabled by default. Whilst in full keyboard emulation mode, some key associated functionality may be disabled (like the ESC key for EXIT). The keyboard emulation mode is toggled using the "Scroll Lock" key (by default).

Floppy Disks

With a disk image loaded, the emulation starts from the BASIC "Ready" prompt.
From here you can enter commands to access the disk image

* A directory listing can be obtained with:


* A program can be run with:


The common programs to run are those with a .BIN or .BAS extension and usually the smaller of the files on the disk image.

On a few games you can type:
to start the game.

If a directory listing cannot be obtained, then the disc might be copy-protected. In this case, try:

"|" is obtained by pressing "shift" and the "@" key together. Since the keyboard is mapped so the keys are in the roughly same place as on a real Amstrad keyboard, then @ can be found around the "[","@","]","#" keys of your PC keyboard.

The |CPM command works by loading and executing the first sector on the first track of the disc.


Snapshots, which contain a memory dump, CPU state and hardware state, can be run from a command line interface with the following command:
mess cpc6128 -snap "snapshot name"

The snapshot will start automatically.


There are a few excellent utilities for creating and maintaining disk images for the Amstrad CPC emulators. Here are just a couple

* CPDRead --
* CPCfs --

Others can be found in the FAQ at

Known Issues

Runs many disk images and snapshots well.

History and Trivia

The CPC 6128 was a 8-bit Amstrad computer, produced in 1985. The CPC6128 was the third in the CPC series. It had basically the same hardware as the CPC464 and the CPC664.

The Amstrad CPC 6128 was the successor to the Amstrad CPC 664 which had a very short life. It had almost all the same features as the 664, except the memory. Like the 664, only 42 Kb could be accessed, the upper 64 Kb were used as a RAM disk or to store data. It was old with quite a good quality monitor (monochrome green or color) and a built-in 3" floppy disk drive (2 x 180 KB).

It ran under Amsdos (the Amstrad Operating System) or under CP/M 2.2 or CP/M 3.0 (CP/M +). The CP/M 2.2 OS was bundled with DR Logo and CP/M+ with GSX (the graphic extension of CP/M). Like the CPC 664, the Amstrad CPC 6128 was almost fully compatible with the CPC 464.

The German version of the Amstrad (Schneider CPC 6128) had different "real" connectors instead of mainboard edge connectors. Norbert Unterberg reports that the main reason for this was that the original Amstrad did not pass the German "FCC" test because it was polluting its surroundings with electromagnetic waves, and the rules for that were much stricter in Germany. That's why the Schneider got real connectors and a metal housing inside. However, after "Schneider Rundfunkwerke" stopped selling the Amstrad CPC series of home computers and the PCW series of word-processors, Amstrad continued to sell the CPC under the Amstrad brand name in Germany.

Lots of Amstrad or third-party peripherals could be added, among them: 2nd 3"/3.5"/5.25" FD max 800k, 20MB Hard disk (4x5MB), Max 252x16k EPROMS, Max RAM Installed 640k (576k in use), RS-232 Interface, Modem, 3 key Mouse, Light Pen, Centronics Dot Matrix Printer, "PC-Hormon" MSDOS emulator

Amstrad CPC vs. Schneider CPC

(info from Lyall Moffitt): This document lists the differences between the English CPC's and the German CPC's. The original
distributor in Germany was Schneider GmbH. The machines distributed by Schneider had the Schneider logo on them. (The monitors and some peripherals were also re-branded as "Schneider" e.g. Schneider DDI-1). Later CPCs were distributed by Amstrad and had the Amstrad logo on them.

The three models distributed by Schneider were:
* Schneider CPC464: This had the Schneider logo followed by "64k Colour Personal Computer <>" printed on the keyboard. The keyboard did not have green and red keys, instead these were coloured light brown/grey.
* Schneider CPC664: This had the Schneider logo followed by "64k Colour Personal Computer <>" printed on the keyboard. The keyboard did not have blue keys, instead these were coloured light brown/grey.
* Schneider CPC6128: This had the Schneider logo followed by "CPC6128: schneiderCPC" printed on the keyboard.

Early German CPC's show "Schneider 64K Microcomputer ..." or "Schneider 128K microcomputer ..." on start-up. Later CPC's showed "Amstrad 64k Microcomputer ..." or "Amstrad 128K microcomputer ...". The start-up name is defined by option links on the P.C.B. German CPC464's and CPC664's have P.C.B. edge connectors like the English CPC's. German CPC6128's have real connectors, instead of the P.C.B. edge of the English CPC's. This was done to reduce RF emissions. The printer is a 36-way female centronics type, the Expansion is a 50-way female centronics type and the second disc drive is a 34-way female centronics type. All the other connectors are the same. (joystick, stereo sound, monitor and power). All German CPC's have internal metal shield covering the circuit board. This is used to reduce RF
emissions. Therefore the German CPC's are much heavier than the English CPC's. Internally, all German CPC's were identical to the English CPC's. The P.C.B. was identical. The quick reference "sheet" on the top of the CPC6128 and CPC664 disc drive is also in German. The computer information, printed on the base of the computer is also in German.

(info from


* CPC Zone --
* Amstrad Computer Manuals --
* Amstrad CPC Basic programming tutorial and games --
* Amstrad Home Page --
* The Unofficial Amstrad WWW Resource --
* CPC 6128 at --

Other Emulators

* Arnold --
* CaPriCe32 --
* CoPaCabana (Win,PalmOS) --
* CpcAlive --
* CPCEMU (En,De,Fr,Es) --,
* CPCE --
* WinAPE32 --
* WinCPC --

Edit the History info for this game.


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