Nascom Newsletter |
Volume 3 · Number 3 · August 1983 |
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The least useful operation of the WAIT – GATE is with both ROM and RAM of either < 275ns or > 525ns access time. The most useful arrangement is with ROM of < 400ns and RAM of < 275ns. To give results, for the test programs given in the manual, over the full range of ROM and RAM set ups would take up a lot of space and reading time. So I will give results for only one arrangement, which I think is the most frequently used today. ie. for 500ns (< 525ns) ROM & EPROM and 250ns (< 275ns) RAM.
| Program | N2 Wait(S) | Wait – Gate |
|---|---|---|
| ROM Basic | 24.8 s | 22.9 s |
| Pascal Runtime (BLS) | 22.5 s | 20.7 s |
| Pascal Compilation (BLS) | 5.1 s | 4.2 s |
| Machine Code (in RAM) | 52.7 s | 44.0 s |
| Zeap Tape Assembly | 22.1 s | 19.9 s |
To summarise. I found the WAIT – GATE a very useful time saving device. It had only one noticable side effect which was increased programming speed (which can’t be too bad!) Finally, the most remarkable aspect for me, was the price Phildata are asking for this piece of hardware, just £ 7.95. all inclusive. I should like to thank Mr. D. Johnson of Phildata for providing the WAIT – GATE for review and assisting with my questions,
A NEW game for Nascom micros featuring FAST, Synchronised Animation.
Mutant Flies are on the rampage in a multi-storey fruit warehouse and its the Runner’s job to go in and save the fruit from the flies. But the real Battle is against the life-cycle of the Drosophila – from bad fruit to vunerable maggot to deadly Drosophila. Keep the population down while you save the fruit, or else ‘
7 game variations using options: fast and slow propagation, with or without mutant slime molds. and automatic or manual fruit pickup.
Put away your NasDos and get the adrenalin running with this slice of the ‘arcade action’ – 14K as all you need to play. ”
Maps to 1000H to 4800H. Nascom 1 requires Nas-sys. Nas-Gra ROM and Cottis Blandford interface. A game with characters NOT sysmbols, for only £8 including p&p from:
Garry Rowland,
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Dagenham
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