17 Feb
2000
17 Feb
'00
7:04 a.m.
On Thu, 17 Feb 2000 18:29:59 +0000 (GMT) classiccmp(a)classiccmp.org wrote:
A word of warning for anyone trying to use the code
that was below on a PC.
Firstly the PCjr serial port is at 0x2F8 (==COM2 on most PCs). Secondly,
and more importantly, the master clock fed to the chip in the PCjr is
different to that used in PCs (and PC/XTs, PC/ATs, etc). Therefore you'll
need to recalculate the baud rate divisors if you want to use it on a PC.
I calculated the divisors in the program by hand, extrapolating from the values given in
the technical reference for standard, higher baud rates.
Kevin