APPENDIX H
Value Meaning
0 Font is not monospaced, or size may vary due to special
effects.
1 Font is monospaced, and uses no special effects other than
thickening (boldface).
+ 072 to +073 (+ $048 to + $049)
SOURCEX
The x coordinate of character to be printed in font form.
SOURCEX can usually be computed from information in the
font header:
ch = character to be printed - first
_
ade
SOURCEX = off_table[ch]
+ 074 to +075 (+ $04A to + $04B)
SOURCEY
The y coordinate of the character to be printed (usually 0).
+ 076 to +077 (+ $04C to + $04D)
DESTX
Horizontal screen position where character will be printed.
+ 078 to +079 (+ $04E to + $04F)
DESTY
Vertical screen position where character will be printed.
+ 080 to +081 ( + $050 to +$051)
DELX
Width of character. Can be computed from information in
the font header as follows:
ch = character to be printed - first__ade
SOURCEX = off_table[ch]
DELX = off
_
table[ch + 1] - SOURCEX
+082 to +083 ( + $052 to +$053)
DELY
Height of the character. Can be taken from the variable
form_height in the font header.
+ 084 to +087 (+ $054 to + $057)
FBASE
The address of the font's character image data block. This ad-
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