For example if the byte given to Control was £24 (hex), ie 00/010/100 and G was 2 then the routine should add D to STRDIS.

The first least 3 significant bits are the routine code, next 3 up represent the list – as above.

Routine 5 – Easy, do Routine 4 but use H (not of HL fame) instead of G. Go back and see what I did for Routine 3. Get the idea?

Well thats all for now, I don’t want you all to end up by going mental with frustration!! Remember that the disassembler as a whole will hang around a) The main subroutines, b) Data and c) Pointers. All must function perfectly. If they do then all will go sweetly, If not then....

Letters

Snowdinger 2 revisited.

This letter arrived from Mir. Kemplen, _ ________ _____, Menheniot, Liskeard, Cornwall about the Snowdinger 2 circuit.

"…After an evenings work I produced a circuit board and added it to the machine. Great. It worked on tabulate and the odd machine code games that I have, so I loaded Basic and tried again. Dismal failure I’m afraid. After about 30 seconds the Basic crashes back to monitor. …”

Any ideas. I’ve sat and thought about it but I have not been able to come up with any reason why it should work from Nas-sys and not Basic. Mr. Kemplen is also offering a PCB for Snowdinger 2 so if you want one you should get in touch with him.

For Sale – Nascom 2, 48K + graphics, Hobbit, IMP, Nasdis, Zeap, Naspen, Books + Manuals, other software including Sargon Chess £570
Tel. Colchester ______

For Sale – Memory cards, both with Page mode fitted. OK at 4MHz (no waits)
48K RAM B £70 (save app. £60 on new kits)
64K G802   £80 (save app. £50 on new kits)
C. Bowden ____-______

For Sale – Nascom RAM A board – 4MHz, no RAM £20, Hisoft Pascal (8x2716) £40 (full documentation), Bits & PC’s Toolkit (2x2708) £15, Naspen (2x2708) £12 (full documentation for both), EPROM Programmer 2708/16 £15, Nascom 3A power supply £15, I/O board with PIO and UART (all documentation). Phone ____-__ ____