Serial Interface - AMSTRAD cpc 6128 User Instruction

The commands:
SET24X80
.... or ....
SET24X80 ON
.... turns 24 x 80 mode on, and:
SET24X80 OFF
.... turns 24 x 80 mode off.
The normal 6128 full screen size is 24 x 80, with the bottom line reserved for status
messages. Turning off 24 x 80 mode will only be noticeable if the status line is also
disabled. Refer to part 15 of Chapter 7 for details of how to turn the status line on and
off.
Serial interface
Built into CP/M Plus is support for a single channel serial Input/Output interface
(RS232). Its vital statistics can be examined by typing the command SET S 10 (with
no parameters):
SETSIO
.... or can be set using a command which may include any (or all) ofthe selections:
SETSIO, RX 1200, TX 75, PARITY NONE, STOP 1, BITS 8,
HANDSHAKE ON, XOFF OFF
.... which would set a new configuration.
Baud rates and X 0 N/X 0 F F status are also affected by one ofthe assignments possible
with the D E V ICE command. D E V ICE deals with logical and physical devices.
Logical devices are indicated by a : colon. To examine all the current device
attributes, type:
DEVICE
AMSDOS and CPIM Chapter 5 Page 27