The History of Video Games #12: The Amstrad CPC 464

Updated: Feb 26


Amstrad CPC 464
Amstrad CPC 464

In the last article, we looked at gaming on the Commodore C64 8-bit home microcomputer. Earlier in the series, we looked at the 8-bit Sinclair ZX Spectrum. Although these were extraordinarily successful, they did not have the 8-bit micro market to themselves for long. In 1984 a self-made millionaire decided he wanted his company to own a slice of the 8-bit pie. That self-made millionaire was Sir Alan Sugar, his company was Amstrad and the computer was the CPC 464. This is its story.

Amstrad – short for Alan Michael Sugar Trading – was founded back in the 1960s. The company soon made a name for itself in the consumer electronics market, providing low-cost and easy to use Hi-Fi systems, TVs and in-car stereo tape decks. By the 1980s Amstrad was trading publicly on the London Stock Exchange and was seeing significant growth. Sugar saw the success of the C64 and ZX Spectrum in his native Britain and deduced (correctly) that there was room in the market for another competitor, and that huge profits could be made.



Design Philosophy



When designing the CPC 464 Sugar’s instructions to the designers was that it should be as simple and intuitive to use as possible. The intention behind this was to create a computer that everyone could use, not just the technologically savvy. This decision informed much of the CPC 464’s all-in-one form factor and internal hardware.


It was also designed to be affordable, with introductory prices of £199 with the monochrome green monitor, and £299 with the colour monitor.


This philosophy and price point proved a resounding success in the UK and Europe. In the UK it was the third best-selling micro after the ZX Spectrum and C64. In Germany, Spain and especially France it was even more successful - in part due to TV adverts such as the one below.


Amstrad CPC advert (French)


Those cheeky crocs...

Video by Zik Zak



Amstrad wisely decided not to attempt to ‘break America’, realising that the 8-bit micro market was not as successful there. Globally however the CPC was a resounding success, selling some two million units.



External Hardware



The CPC is notably longer than the other 8-bit microcomputers. This was in part due to the inclusion of an integrated tape deck. This was in-keeping with Sugar’s vision of an easy to use all-in-one computer.


Incidentally, this is likely why the post-Amstrad buyout ZX Spectrum 128K +2 and +3 featured integral tape decks and disc drives.



Amstrad CPC 464 with colour monitor
The first iteration of the CPC line – the 464 with colour monitor

The CPC’s length was also due to its full keyboard, complete with number pad and cursor keys – keyboard elements that both the C64 and ZX Spectrum lacked.

The decision to include cursor keys was allegedly made so that the cursor could move around the home screen, as this is what felt natural. He suspected customers had found the inability to do this on the C64 and ZX Spectrum counterintuitive and frustrating. Considering all computers and keyboards now possess cursor keys as standard it is safe to say he was correct in his assessment.


The location of the cursor keys was a little awkward however, being near the ‘top’ of the keyboard, above the number pad. Still, it was a start, and the keyboards of later iterations of the CPC line would migrate the cursor keys to their now standard location.


One of the alleged reasons for including a full keyboard was Sugar’s desire for the CPC 464 to “look like a proper computer like you would see at an airport when checking in.”


The CPC featured the 9-pin joystick port which was standard across all the 8-bit micros and an expansion port for external ROMS.



Bespoke Monitor



One thing the CPC lacked, however, was the ports for connecting to a standard TV. Sugar felt that having to mess around with connecting the computer to a TV would be a hassle for less-tech savvy customers. Therefore, the decision was made to ship the CPC 464 with a bespoke monitor, either the economy green and black screen or the full-colour display.


This removed much of the hassle of connecting a computer to a display and arguably resulted in a sharper image. It also meant that someone could use the computer whilst someone else was watching the TV. In an era when most homes possessed only one television set (at least in the UK and Europe), this may have been a significant selling point.



Internal Hardware



Hitting the market several years after the ZX Spectrum and C64 allowed the CPC to incorporate the best elements of both.


The CPC used the same 4 MHz Z80 CPU as the ZX Spectrum, giving it a significant clock speed advantage over the C64.


Its 64K of RAM matched that of the C64 and overmatched the ZX Spectrum’s 16K to 48K RAM.


The CPC 464 also possessed a Motorola 6845 Video Display Controller - a form of graphics chip, not dissimilar to the C64’s. This gave it a clear advantage over the ZX Spectrum.



Graphics


What’s more, the CPC 464 featured a 27-colour pallet, which was about one-and-a-half times as many colours as the 16-colour palettes of the C64 or ZX Spectrum. The colours in the CPC’s palette were significantly more vibrant than the muted tones of the C64’s.



Amstrad CPC 27-Colour Palette
Amstrad CPC 27-Colour Palette

Video Modes



Similar to the C64 The Amstrad CPC 464 had multiple colour modes running at different resolutions. This allowed developers the flexibility to choose the colours and resolutions most suitable for their game. The two most commonly used for video games were modes ‘0’ and ‘1’.


  • Mode 0 had a resolution of 160 x 200 and allowed 16 colours on screen at once.


  • Mode 1 had a resolution of 320 x 200 but allowed only four on-screen colours at once.

Mode 0 games tended to be far more colourful but with ‘chunky’ pixels. Mode 1 games lacked the colours of Mode Zero games but compensated for this by their less pixelated look. Gamers were sometimes in disagreement as to which mode they preferred. The videos below illustrate the differences in graphics modes well so you can judge for yourself.



Turrican Amstrad CPC – Mode 0: 16 colours – 160 x 200 resolution


Video by Amstrad Maniaque



Flying Shark Amstrad CPC – Mode 1: 4 colours – 320 x 200 resolution


The extra colours make seeing the enemy’s bullets far easier on the CPC version of Flying Shark than on the ZX Spectrum’s

Video by Zeusdaz - The Unemulated Retro Game Channel