WORDMONGERS LIMITED
Tape streamer software for the Z88
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The Wordmongers Z-Tape program is designed to provide general data backup opportunities for the Z88 with a cassette recorder.
In addition, the software includes a routine which will run a machine code program from RAM.
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Two elements are crucial to the proper transmission and receipt of the noises and both are related to timings. The data sent out from the Z88 goes at a set speed which must remain constant when the data are read back. For this reason the health of the power supply to the tape recorder is of utmost importance. If batteries are used, they should be checked regularly. Whenever possible, a mains supply should be used.
Equally important is the quality of the tape in use. The recommended tape is a C30 with 15 minutes on each side, or a smaller tape. Larger tape may stretch and distort. The C30 tape is sufficiently robust not to stretch too much in use. Thus the apparent speed of the data on the tape is less likely to distort.
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An additional way to select a device is to scroll round the Z88 device addresses using ◇ ↑ and ◇ ↓. Even if there is no RAM.3, it will still appear on the scroll round as an empty directory. If an absent RAM pack is accidentally logged an error message will appear when any saving is to be done.
Cable Schematic
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Further Reading
Reverse engineering Z-Tape for the Cambridge Z88 by Ben Ryves.