IBM 5100 User Manual

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Control Command Data Table (Continued)
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Device
Address Device Bits
State
Bits 4·7 Name
8·15
of Bit
Definition
2 Not assigned
3 Not assigned
(
4
Keyboard and
8
0
No action
control panel
1
Not used
switches
9
0
Reset interrupt
1
No action
10 0
No action
1
Not used
11
0
Keyboard lock (not used). See Keyboard in this section
Enable keyboard interrupt
12
0
No action
1
Not used
13 0
No action
1
Not used
14
0
Set repeat action function
1
No action
15 0
No action
Disable keyboard interrupt
5
Printer
8 0
Disable (selection) unless bits 9 & 10 & 11 = 110, then
RDS address bit 0 on
Enable (selection) unless bits 9 & 10 & 11 = 110,
then RDS address bit 1 off
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9&
000
Both motors on (bit 0 = 1 also)
10&
001
(Select) forms
11 010
(Select) print
011 Not used
100
(Select) not ready interrupt
101
(Select) timer unless 14 & 15 = 00, then allow RDS
addressing enable-disable via bit 0 above
110
RDS addressing indicator
111
Both motors off (bit 0 = 1 also)
12 0
If9& 10& 11 =001 or 010 select not A
If 9 & 10 & 11 = 110 RDS address bit lon, otherwise
no action
If9& 10& 11 =001 or 010 select latch A
(
If 9 & 10 & 11 = 110 RDS address bit 1 off, otherwise
RDS control
13
0
If 9 & 10 & 11 = 001 or 010 select not B
If 9 & 10 & 11 = 110 RDS address bit 2 on, otherwise
no action
1
If9& 10& 11 =001 or 010 select latch B
(/
If 9 & 10 & 11 = 110 RDS address bit 2 off, otherwise
not used
14 & 00
(Print or forms) go latch or RDS control (14 & 15 = 00
15
for all RDS control)
01
(Select) interrupts
10
Reset interrupts
(
11
(Select) (print or forms) motor latches
Example:
Hex 51 = B 01010001 = Disable timer interrupts
Hex 93 = B 10010011 = Enable forms motor latches not A and not B
Microinstructions C.s

IBM 5100 Specifications

General

Release Year	1975
RAM	16 KB - 64 KB
Storage	204 KB tape drive
Display	5-inch CRT
Operating System	APL/BASIC
Processor	IBM PALM (1.9 MHz)