ZX81 Programs


Read about, play, run, or list games, animations, and more. These are my programs from the ’80s to today.

ZX81 Program Listing

prtscrl2 (prtscrl2.p)


SYSTEM VARIABLES

PROG  : 16509
D-FILE: 16786
VARS  : 16811
E-LINE: 16812
STKBOT: 16817
STKEND: 16817


LEGEND

9999 means line number
PRINT means treat as KEYWORD P


PROGRAM LISTING

   1 REM /.**PRTSCRL2*SLR/2024**
   2 REM LN BRNDLN ABS RND/SAVE
TO RETURN
8197 RND/=SCROLL RETURN
10255 ?LN SAVE <UñRNDACS ?COS AT
INT "AT INT COPY UURNDCHR$ ôCC?·
"?LCOS LN TO RND,NOT <"?ABS RND
STR$ VAL ñPòE£RNDùFOR E:RNDJ
GOSUB DELETE ?PATN RUN RNDAT
SGN TAN RND7LOOP DATA ñ5 ùñPò
GOSUB Kñ+òE£RNDù6:RNDY5MTRNDYôMU
RNDTAN
  10 CLS
  20 LET T$="**WELCOME TO THE 80
S TEXT DEMO**"
  30 PRINT USR 16514;T$;
  40 LET T$=T$(2 TO )+T$(1)
  50 GOTO 30