diff options
Diffstat (limited to 'hacks/munch.man')
| -rw-r--r-- | hacks/munch.man | 56 |
1 files changed, 22 insertions, 34 deletions
diff --git a/hacks/munch.man b/hacks/munch.man index d5423c9..4944ac0 100644 --- a/hacks/munch.man +++ b/hacks/munch.man @@ -1,19 +1,6 @@ -.de EX \"Begin example -.ne 5 -.if n .sp 1 -.if t .sp .5 -.nf -.in +.5i -.. -.de EE -.fi -.in -.5i -.if n .sp 1 -.if t .sp .5 -.. .TH XScreenSaver 1 "29-Aug-2008" "X Version 11" .SH NAME -munch - munching squares +munch \- munching squares .SH SYNOPSIS .B munch [\-display \fIhost:display.screen\fP] [\-foreground \fIcolor\fP] @@ -94,46 +81,47 @@ stored in the RESOURCE_MANAGER property. .RS 0 .BR http://www.inwap.com/pdp10/hbaker/hakmem/hakmem.html .SH HISTORY -HAKMEM: MIT AI Memo 239, Feb. 29, 1972. -.RS 8 +.B HAKMEM: MIT AI Memo 239, Feb. 29, 1972. Beeler, M., Gosper, R.W., and Schroeppel, R. "Unless otherwise stated, all computer programs are in PDP-6/10 assembly language." -.TP 4 -ITEM 146: MUNCHING SQUARES + +.SS ITEM 146: MUNCHING SQUARES Another simple display program. It is thought that this was discovered by Jackson Wright on the RLE PDP-1 circa 1962. +.nf +.sp + DATAI 2 + ADDB 1,2 + ROTC 2,-22 + XOR 1,2 + JRST .-4 +.sp +.fi -.EX - DATAI 2 - ADDB 1,2 - ROTC 2,-22 - XOR 1,2 - JRST .-4 -.EE -.RS 4 2=X, 3=Y. Try things like 1001002 in data switches. This also does interesting things with operations other than XOR, and rotations other than -22. (Try IOR; AND; TSC; FADR; FDV(!); ROT -14, -9, -20, ...) -.RE -.TP 4 + +.SS ITEM 147 (Schroeppel): Munching squares is just views of the graph Y = X XOR T for consecutive values of T = time. -.TP 4 -ITEM 148 (Cohen, Beeler): + +.SS ITEM 148 (Cohen, Beeler): A modification to munching squares which reveals them in frozen states through opening and closing curtains: insert FADR 2,1 before the XOR. Try data switches = +.nf +.sp + 4000,,4 1000,,2002 2000,,4 0,,1002 +.sp +.fi -.EX - 4000,,4 1000,,2002 2000,,4 0,,1002 -.EE -.RS 4 (Notation: <left half>,,<right half>) .RS 0 Also try the FADR after the XOR, switches = 1001,,1. |