I get around the inconsistency of some programs using CR and others
using CR and LF at line ends as follows. The printer procedure
ignores LF’s completely, and converts CR to LF before sending it to
the printer, which has AUTO FEED off. CH is converted ta CR in order
to preserve compatibility with Nas-Sys cursor controi. The MX8O"s
block graphic character set has different codes to Nas-Graphics. This
short procedure converts from Nascom to Epson graphes:
sNas graph char in A
LD &, #46
wo B,S 3&6
= INC HL
sexit with Epsom graph char in A
CTAB DEFB 1,4,14,2,8,22
Finally, I disagree with David Hunt*s comments about =ON/AOFF
protocol. At work fF am aiuser of small computers (mainly PDF 11},
which use only this protecal. Both in terms of cabling costs and
interface simplicity it is greatiy to be preffered tao handshaking
with DTR etc. Indeed, few DEC interfaces suopert nNandshake lines. and
XON/ ZOFF is the only available method for Z20mA current ilooo
These ads. are printed free-of-charge (when space permits) provided that they
are for the sale of private property and are not for commercial gain. If you
want to advertise games, or that Greenhouse Controller Board then you’ll have
to pay. Write for details of our super rates.
Nascom RAM card A. ;
32K fitted + 4K firmware; works at 4MHz without wait states £50 ONO.
Tel: Clive Graham, Crawley 547400.
Cased with 48K, graphics, Nas-Sys 3 & 1, Imp printer, Hobbit microcassette
system, toolkit, Zeap, Nas-Dis, Naspen, games, spare cassettes, magazines and
books. Complete working system, £450 for clearance.
Colchester (0206) 841293.
1) Epson MX-70 (80-col + dot gaphics).
2) Golfball Terminal/Typewriter with Serial interface (135 baud – 15cps)
(software and baud rate generator for Nascom also available)
£190 ono each. Mike, 01 874 6244.