Draw_VLp_7F ($F408)
These routines force the scale factor to 0x7F, and then process the vector list pointed to by the X register. The vector list has the following format:
pattern, rel y, rel x
pattern, rel y, rel x
. . .
. . .
pattern, rel y, rel x
0x01
The list is terminated by a pattern byte with the high bit cleared.
ENTRY:
DP = $D0
X-reg points to the vector list
EXIT:
X-reg points to the terminator byte
D-reg trashed