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The authoritative CPM Plus Handbook Operators and Programmers Guide tor the Amstrad CPC6128 and PCW8256 apart from tiring text-tacklers tongues has been gracing book stalls tor several years Just recently it has undergone surgery Unlike many face-lifts though, the content has been increased The 87 floppy back version provides 515 pages of pure programming paraphernalia and a 'Now with GSX supplement' flash.

Both Amstrad plc and Digital Research Inc have poured their knowledge into this publication you can expect an in-depth precise read.

The book is split into two distinct parts how to use CPM Plus and how to program using CPM plus The fust section gives you full details on CPM commands, how to accomplish mundane but necessary tasks (such as copying and formatting a disk) and gives a rundown oi the files on the reverse of your system disk — something the 6128 User Instructions tailed miserably to convey Section two is purely lor those wishing to program in 8080 using various CPM system calls.

It seems the main reason for giving the book a new lease of life was to include an appendix on GSX By piping a Graphic System extension to CPM. you can persuade" it to produce graphics A lot of hard work is needed to set up a working system — past don't expect this information m the book CPM plus Handbook is not for the novice It is aimed at those wanting to fill gaps m their knowledge of CPM.

Although the Handbook scrapes the £15 mark, the price is justified you'd be hard put to find such a complete, comprehensive collection of CPM Plus secrets anywhere else If you're a Plus programmer, a fanatical fancier of technical data or harbour a desire to understand the undocumented utilities on your system disk this is the book for you.


★ PUBLISHER: Heinemann
★ YEAR: 1987
★ AUTHOR: Digital Research
★ PRICE: £14.95 (515pp)

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L'Amstrad CPC est une machine 8 bits à base d'un Z80 à 4MHz. Le premier de la gamme fut le CPC 464 en 1984, équipé d'un lecteur de cassettes intégré il se plaçait en concurrent  du Commodore C64 beaucoup plus compliqué à utiliser et plus cher. Ce fut un réel succès et sorti cette même années le CPC 664 équipé d'un lecteur de disquettes trois pouces intégré. Sa vie fut de courte durée puisqu'en 1985 il fut remplacé par le CPC 6128 qui était plus compact, plus soigné et surtout qui avait 128Ko de RAM au lieu de 64Ko.