Routines
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BDF1: Clear Lines
Clear the picture lines, using the line count stored at BB40.
Input
B Line count from *BB40
ClearLines BDF1 CALL SwitchToNormalScreenOutput Call SwitchToNormalScreenOutput to select the screen channel.
BDF4 LD A,($BB40) Clear the number of lines held by *BB40 from the bottom of the screen using CL_LINE.
BDF7 LD B,A
BDF8 CALL $0E44
BDFB RET Return.
View the equivalent code in;
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