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LW6EAH > IBM 08.05.04 17:25l 23 Lines 650 Bytes #999 (0) @ WW
BID : 000154LW6EAH
Read: DG9NFL GUEST DC9BM
Subj: Re:Serial I/O from LPT1 ??
Path: DB0FHN<DB0FOR<DB0SIF<DB0EA<DB0RES<ON0AR<ZL2TZE<W4JAX<N2BQF<EA2RCF<
ED1ZAC<LU7EC<LU7DR<LU6DG
Sent: 040506/0356Z @:LU6DG.8109.BA.ARG.SA #:1845 [Punta Alta] $:000154LW6EAH
From: LW6EAH@LU6DG.8109.BA.ARG.SA
To : IBM@WW
> Hello to all DOS program collectors / authors.
> Can you supply a simple machine code routine to do serial I/O
> from a PC at TTL level from a parallel port without a UART in
> hardware - a software UART is the essential requirement.
> It would suit my purpose if there were two routines that can
> be called from say Q-BASIC to allow TTL ASCII transfers such
> as to a radio without RS-232c level signalling.
And why not shifting signal levels, to ttl on pc end, or to rs-232 on
radio end?
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Rodolfo Brasnarof LW6EAH
LW6EAH@LU6DG.8109.BA.ARG.SA
lw6eah@qsl.net
Punta Alta
Argentina
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