RASTEROP
ss->ss_adder->cmd = RASTEROP | OCRB | S1E | DTE | LF_R1;
ss->ss_adder->cmd = RASTEROP | OCRB | S1E | DTE | function;
ss->ss_adder->cmd = RASTEROP | OCRB | S1E | DTE | LF_R1;
adder->cmd = RASTEROP | OCRB | 0 | S1E | DTE;
adder->cmd = RASTEROP | OCRB | 0 | S1E | DTE;
adder->cmd = (RASTEROP | OCRB | LF_R2 | DTE ) ;