Abekas RS-232
Abekas Video Systems
Simon Carter - 1991
The two .c files contain routines which form the basis of an RS-232 serial
control interface for the A60 or A64 from an SGI 4D. As there is no 'main()',
the files are not standalone and a Makefile is not included.
BUGS: For reasons which I haven't yet investigated the current response is
always for the previous command. (Presumably read doesn't wait for very
long before returning.) - a sleep might fix it!
a60_rep.c -
This file contains the reply function which will parse a reponse
packet from an A60 or A64, most respones are skipped. The normal
length is a response is four bytes, execptions are noted. The A60
generally supports a subset of the A64 commands and responses.
Conditional compilation is used to resolve irreconcilable differences.
responses.h -
This is the header file for a60_rep.c. It contains definitions
required for parsing the responses from an A60 or A64.
serial.c -
This file contains functions for opening, formatting, sending, and
receiving data to/from the A60 or A64. Also included are a few
pre-built machine commands; stop, play freeze, etc.. More may be
created from data found in the A60 External Protocol Manual 74-M053-00.
Source
Documentation
OR, ...