N/A Printer handshake
A useful extra, saves a wasted 2708 or lots of typing. Works. From Basic, one Poke on,
one Poke off.
Supposed to’ scan the keyboard once and return with value if key pressed. I can’t get
this to work ( but see above re. machine code !).
-U,.X, oN N/A
Activate U out, X out, Return to monitor respectively. Since I don’t understand
Nas-Sys the first two are an unknown quantity for me.
The Henry’s format of ".<Command>" is a nuisance compared to the meaningful names of
the other. Soon get used to it though. The Bits and P.C.’s has some strange features
(not really bugs but with no info....)
DOCUMENTATION of both is of the standard that we have come to expect, i.e. lousy.
There seems small chance of gaining any comprehension of how either works, though the
Henry’s information is slightly better.
RELATIVE ADVANTAGES ...I generally use the Bits and P.C.s toolkit since it is 1) in
ROM and instantly available 2) uses no RAM space at all except in the work area. The
Henry’s version eats 2K of expensive RAM. However, the price paid for this is that the
Bits and P.C.s toolkit is very noticeably slower.Fair exchange ?
ARE THEY WORTH BUYING ? Well, I don’t regret the money and wouldn’t want to lose
either. However I would trade both for the following facilities comprehensively
implemented in ROM: 1) Renumber, like the Henry’s 2) Find and optionally change 3)
Append 4) Auto 5) Cross reference listing 6) Dump ....in that order, implemented using
Keyboard repeat ( or use Nas-sys 3) The rest of the facilities are o.k. but Oh! for a
find and optionally change.......+..2.-
Please note: the author is a known Dodo; bear this in mind when buying either.
Below is a “PRINT USING’ routine, also from Mr.James Weatherson-Roberts.
780 REM ** DEMO ROUTINE ** 790 PC=.1
800 GOSUBL150 810 PRINT,PUS
820 PC=-1 830 GOSUB1150
840 PRINT, PUS 850 OP=1:PC=10
860 GOSUB1150 870 PRINT, PUS
880 OP=1:PC=-100 890 GOSUB1150
900 PRINT, PUS 910 PC=1234.0345
920 GOSUB1150 930 PRINT, PUS
940 PC=1234.0354 950 GOSUB1150
960 PRINT, PUS 970 PC=9999999
980 GOSUB1150 990 END
1000 REM *Kx4kkKRKK’ PRINT USING RERKRRRKRA RR RIK
1010 REM Version 3.2
1020 REM Variables used:
1030 REM PMS (Print mask)
1040 REM SW = (Switch)
1650 REM OP (Option)