GN_Flw, Write character to filter
Register parameters
RST 20H, DEFW $2609
IN:
IX = filter handle
A = character to write to filter
OUT, if call successful:
Fc = 0
A = A(in)
OUT, if call failed:
Fc = 1
A = error code:
RC_HAND ($08), bad filter handle
RC_FLF ($0A), filter is full
Registers changed after return:
A.BCDEHL/IXIY same
.F....../.... different Related calls
GN_Flc, close filter
GN_Flf, flush filter
GN_Flo, open filter
GN_Flr, read from filter
GN_Fpb, push back into filter