Modifications or Corrections To Previous Articles
Machine Language: First Steps
There are two corrections to be made to Jim Butterfield's series of columns "Machine Language: First Steps" (May through July 1982). In the BASIC program which appeared several times in the series, line 220 should be changed as read:
220 J=48:FOR K=1 TO V
and in Part III (July 1982, p. 150), line 120 should read:
220 120 DATA 3,144,239,169,13,32,210,255,96
The correct POKE to disable the LIST command on the VIC ("VIC Curiosities," August 1982, p. 140) is POKE 775,200.
Apple Chemistry Lab
There are several typos in the chemistry simulation ("Chemistry Lab," August 1982, p.75). Line 1220 should include a secind parenthesis (X0) and lines 6035, 6050, and 6120 use a colon, not a semicolon. Lines 1041 and 1047 should start with PRINT " and line 7001 should start with DATA.