The following program is used to write data to a printer using
the SPP protocol showed below.
void PutChar(unsigned char c)
while ((PTJ & 0x02) !=0 );
PTH = c;
PTJ = PTJ & ~0x01;
PTJ = PTJ | 0x01;
How many NOP statements must be used to insure the
STRB# line is low for the minimum amount of time
if n = 0.5
?s and the processor takes
5clock tick(s) per instruction with a clock of
DB-Do STRB# ACK# BUSY 8 min, min. 5 min.min.
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