IBM 5150 Hardware Reference Manual

(8) DC 2 (Device Control 2)
The
DC 2 code cancels the SI mode.
[DATA] ~ ABCDEF ~ GHI ~ ~ ~ JKLMN I CR I ~
[PRINT] ABCDEFGHI
JKLMN
(9)
HT (Horizontal Tab)
The
HT code carries out the horizontal tabulation. If there is no
tab position set, this code is ignored. The tab stop positions are
set by
"ESC D+n" (described later).
(10)
CAN (Cancel)
Upon the input
of the CAN code, all data previously stored in
the print buffer is cancelled. Therefore, this code is regarded as
the print buffer clear command. This code clears the print
buffer, but control codes (Excluding the
SO code) are still valid
even ifthe
CAN code is transferred. The validity or invalidity of
the CAN code is selectable by the DIP switch pin 1-4 on the
control circuit board.
(11) DEL (Delete)
This code functions the same as the
CAN code. The validity or
invalidity of the DEL code is selectable by the DIP switch pin
1-5 on the control circuit board.
(12)
DC 1 (Device Control 1)
The
DC 1 code places the Printer in the Selected state. With the
Printer in the Selected state, if the
DC 1 code is input during
data transfer, all data stored before the DC 1 code is ignored.
(13)
DC 3 (Device Control 3)
The
DC 3 code places the Printer in the Deselected state. In
other words, it disables the Printer to receive data. Once the
Printer is
put in the Deselected state by the DC 3 code, the
Printer will
not revert to the Selected state unless the DC 1 code
is input again.
Note:
When the DC 1 and DC 3 codes are used, DIP switch
pin 1-8 should be in the
"OFF" position.
r'"'\, 1. [DATA] [Q[!J AAAAA 1 DC 31 BBBBB @DJ CCCCC ~ [ill
[PRINT] AAAAACCCCC
2. [DATA] AAAAA @fJ] BBBBB I DC 31 CCCCC ~ @BJ [ill
[PRINT] BBBBB
2-81

IBM 5150 Specifications

General

Processor	Intel 8088
Clock Speed	4.77 MHz
RAM	16 KB - 256 KB
Manufacturer	IBM
Model	5150
Release Year	1981
Storage	5.25-inch floppy drives
Graphics	MDA or CGA
Operating System	IBM PC DOS
Ports	Cassette, keyboard
Expansion Slots	5