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A > AMSTRAD  > 464 / 6128 Plus   

464 / 6128 Plus

These Amstrads were the successors of the Amstrad CPC 6128. Amstrad tried to prolong the life of the old 8-bit Amstrads, which suffered from competition with the new 16-bit home computers (like the Amiga and Atari ST).

Amstrad made some important modifications to maintain the level of its machines, the CPC 6128 Plus became 95% compatible with the CPC 6128 (using the same operating systems AMSDOS and CP/M 3.0). However, some software did not run on the plus range and amstrad official statement was that the programmers where lazy and used bad programming in some software resulting in crashes on this machine.

Several new features were added: hardware scrolling, increased color palette, an enhanced sound chip, a cartridge port, and a redesigned keyboard. Some of these features were not even present (yet) on certain 16-bit computers (Atari STf didn't have hardware scrolling or sprites). Regardless, this new version of the CPC didn't last long.

The system offers 16 hardware sprites at a size of 16x16 pixels. The sprites are using 15 other colors than the 16 of the palette, and have x/y zoom. The soundchip is the same AY as on the CPC, but controlable with a DMA.

As Atari did with the 65-XE when it reached the end of its life, so Amstrad made a game console from the Amstrad CPC Plus hardware called the GX 4000. This console used the same programs as the computer but were supplied on cartridges.


Hi Chris,

What a pity !!!! Here in Spain, Amstrad supported the CPC until 1994, when the CPC''s and the rest of the 8 bits computers disappeared.

Monday 15th April 2013
Noobsaibot73 (Madrid (Spain))$zsjTpFR0oYQ

please help
trying to convert 8bit video for sam coupe
this is still not mode 3 interlaced with hmpr bit 5$6 CLUT alterations per scan line HELP we only need a DMA...
masterdos/basic atom lite support HELP

Thursday 28th February 2013
Roger Jowett (Ulster)

Sadly Amstrad Australia refused to import these and stopped supporting Amstrad CPC models by 1990.

Thursday 4th October 2012
chris (Australia)


NAME  464 / 6128 Plus
ORIGIN  United Kingdom
YEAR  1990
BUILT IN SOFTWARE / GAMES  Locomotive Basic 1.1
CONTROLLERS  QWERTY / AZEERTY mechanical keyboard
CPU  Zilog Z80A
SPEED  4 mHz
RAM  6128+ : 128 kb
464+ : 64 kb
ROM  32 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  31 maximum (16 + 15 for sprites) among 4096
SOUND  3 stereo voices, 8 octaves
+1 noise channel
I/O PORTS  Light pen / gun port
Stereo sound output
Centronics port
Extension port
2 Joystick ports (Atari) + 1 analogic
External drive port (CPC 6128+ only)
Cartridge slot
RGB monitor DIN plug
MEDIA  CPC-464+ : Tape-recorder (without tape counter)
CPC-6128+ : 3'' disk-drive, but no tape plug
POWER SUPPLY  5v DC, through Amstrad monitor
PRICE  CPC-6128+ : Monochrome - 455 (november 90)
CPC-6128+ : Color - 608 (november 90)

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