text/6/2
The way the display card handles
graphics is to assign each dot
location two numbers, one for its
horizontal position and one for
its vertical position.  To put a
dot in the upper left corner of
this screen, the card would tell
the monitor to put a dot at 0,0.
And the lower right of this screen
is 639,199. The middle is 320,100.
~


rectangle/403/58/412/68
KC/403/58/412/68/413/68
KC/403/58/422/78/423/78
KC/403/58/442/98/442/98
changepattern1
flood/406/63
flood/417/73
flood/436/94
flood/448/103
flood/454/113
flood/466/123
flood/476/135
flood/428/83
text/368/160
A line drawn from 56,127 to
64,135.
~
line
348/58/610/58
348/68/610/68
442/48/609/48
348/38/608/38
348/28/608/28
348/78/610/78
348/88/609/88
348/98/608/98
348/108/609/108
348/118/610/118
348/128/608/128
348/138/609/138

line
348/148/456/148
520/148/610/148
348/158/358/158
348/158/612/158

line
349/48/374/48
353/29/353/157
363/29/363/157
373/29/373/157
383/29/383/157
393/29/393/157
403/29/403/157
413/29/413/157
423/29/423/157
433/29/433/157
443/29/443/157
453/29/453/157
463/29/463/157
473/29/473/157
483/29/483/157
493/29/493/157
503/29/503/157
513/29/513/157
523/29/523/157
533/29/533/157
543/29/543/157
553/29/553/157
563/29/563/157
573/29/573/157
583/29/583/157
593/29/593/157
603/29/603/157

KB/375/43/442/51
KY
KB/455/141/522/150
KY

text/374/44
(56,127)
~
text/453/142
(64,135)
~

text/6/93
   To draw a line, the card would
tell the monitor to put dots at a
series of locations. There are
some more RAM chips on the
display card to remember which
places dots are to be located.
The text character patterns of
dots are stored in ROM chips on
the display card.
~