Sinclair Library

48/80 FORTH

Programming: General · ZX-Spectrum 48K · 1 players · English

East London Robotics Ltd · 1983 · Pound sterling 14.95

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This was a port from a Forth Interest Group source. "I did this before I worked at Sinclair, and sold it to East London Robotics who at the time were making a 32k and paged 64k ram extension. They purchased it I think because they had people buying their 64k hardware but with no applications which could use it, and so they had to answer the question of what could you do with it!"

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In the magazines

  • Sinclair User #301984 · Gilbert Factor7/10

In the magazines 37

Sinclair User #30Sep 1984 · p.57/107/10

Sinclair User

Gilbert Factor 7/10

John Lambert 7/10

Memory: 48/80K Price: £14.95 From East London Robotics, 48/80 Forth is a full, integer implementation of the language, based on Fig Forth, with additional words defined to use the colour, sound and graphics capabilities of the Spectrum. While it will work on the 48K machine it can also be used by users who have the ELR 80K memory upgrade. To use the Forth editor it has to be loaded from tape and will give a total of 16 screens, 32K on the 80K version. Each screen consists of 1,024 bytes, made up of 16 lines of 64 characters. The instruction booklet supplied with the tape gives a very brief introduction to the language and shows how a word can be defined. It also explains the operation of the stack and has a few examples to show loops, conditionals and variables. Beginners, however, will need to buy a book on Forth to obtain the best from the program. The booklet has a complete glossary of all the predefined words and the appendices list the error messages, memory maps and the necessary information to write your own machine code definitions. Overall, this is a reasonable but average implementation. If you have the memory upgrade, however, it becomes a far better proposition because of the space available.

Read it at Sinclair User Magazine Online

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