Program # 92751
Program Name: KILL THE BIT

Programmer: DEAN B. McDANIEL

Date Written: MAY 15, 1975

Computer: ALTAIR 8800

Core Requirements: 24 WORDS (Relocatable)

Input/Output Requirements: SENSE SWITCHES

000000 041 LXI H Initialize Counter
000001 000
000002 000
000003 026 MVI D Set-up initial display bit
000004 200
000005 001 LXI B Load speed data (higher
000006 016 the value the faster the
000007 000 data rotates)
000010 BEG: 032 LDAX D Display bit pattern on
000011 032 LDAX D upper 8 address lights
000012 032 LDAX D (ie: sense switches)
000013 032 LDAX D
000014 011 DAD B Increment display counter
000015 322 JNC BEG
000016 010
000017 000
000020 333 IN Input data from sense switches
000021 377
000022 252 XOR D Exclusive OR with A-reg.
000023 017 RRC Rotate display right one bit
000024 127 MOV D,A Move data to display reg.
000025 303 JMP BEG Repeat sequence
000026 010
000027 000

Program Type: DEMONSTRATION (GAME)

Object: TO KILL THE ROTATING BIT. IF YOU MISS
THE LIT BIT ANOTHER ONE AT THAT SWITCH POSITION
WILL TURN ON, NOW LEAVING YOU 2 BITS TO DESTROY.
MERELY TOGGLE THE SWITCH, DON’T LEAVE THE S.S.
IN THE UP POSITION. BEFORE STARTING MAKE SURE ALL
THE S.S. ARE IN THE DOWN POSITION.
* HAVE FUN *