File:Ferranti Archives ZX81-UNK-COD-132 ZX Printer listing of a ZX81 test program.pdf
Summary
[edit | edit source]A creased strip of ZX Printer paper with a 30-line ZX81 BASIC listing headed in pencil "ZX81 TEST PROG". Line 10 is a REM holding machine code and line 12 saves the program. The program checks a machine-code result (IF USR A=182), checks an arithmetic result, tests each keyboard row in turn against the expected keys, asks the operator to type the bottom row with its shifted symbols, and finally fills the screen with "OK" and graphics. Variables such as A, F$ and the key strings were set before the program was saved. A pencil note below gives a value for A, probably 16514 (one digit is unclear). It was filed in the ZX81 memory folder ZX81-FER-FOL-142. Part of the Ferranti Archives 2026.
Archive record
[edit | edit source]| Catalogue ID | ZX81-???-COD-132 |
|---|---|
| Date | Undated |
| Origin | UNKNOWN |
| Document type | General |
| Device or subject | ZX81 |
| Catalogue description | ZX Printer printout of some test code |
| Original file name | {{{filename|}}}
|
| Found in | ZX81-FER-FOL-142 |
| Pages | 1 |
Source
[edit | edit source]Ferranti Archives 2026, original scan on Google Drive.
Author
[edit | edit source]Unknown
Licence
[edit | edit source]Ferranti Archives 2026: source and terms of use
This scan is part of the Ferranti Archives 2026, a collection of Sinclair-related documents from Ferranti's files, catalogued in 2026 and released through the Happy Little Diodes YouTube channel (video, catalogue). The archive presents the documents for preserving and archiving material of historical interest, and for non-commercial, educational and archival research. Its terms state that consent is strictly limited to non-commercial use, and that any commercial exploitation of the documents or their contents, including use in connection with the manufacture, marketing or sale of goods, is strictly prohibited by Sky UK Limited.
Copyright remains with the rights holders. The file is not freely licensed and is hosted here for preservation and repair reference only, under the archive's terms. Personal information was redacted by the archive before release; if you find any that remains, please tell [email protected].
File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 11:00, 18 October 2026 | 0 × 0 (879 KB) | Josh (talk | contribs) | Ferranti Archives 2026: ZX81-UNK-COD-132 |
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