Tektronix 4024

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Tektronix 4024
Tektronix 4024.jpg
Manufacturer Tektronix
Model 4024
Lifetime
Introduced November, 1977
Introductory Price $2,995
Discontinued 1982
Communication
Interfaces RS-232C,
20 mA current loop
Baud Rates 75, 110, 150, 300, 600, 1200, 2400, 4800, 9600
Display
Size 12-inch
Phosphor P39 green
Refresh Rate 60 Hz
Character Modes
Resolution 80x34
Matrix 7x9
Cell 8x14
Firmware
CPU Intel 8080
RAM 4 KB to 32 KB

The Tektronix 4024 terminal was introduced in 1978 at a price of $2,995.[1][2]

Options
Part Number Price Description
Option 2 $230 Current Loop Interface
Option 3 $300 RS-232 Peripheral Interface
Option 10 $250 Polling Interface
Option 20 $250 8 KB Display RAM
Option 21 $750 16 KB Display RAM
Option 22 $1,750 32 KB Display RAM
Option 32 $150 Ruling Characters
Option 48 No Charge 220 Volt Power
Memory Map
Start End Description
0x0000 0x00FF Power-Up/Interrupt ROM
0x0100 0x07FF Unused (1792 bytes)
0x0800 0x0BFF I/O Address
0x0C00 0x0FFF Fix-It ROM
0x1000 0x4FFF System Firmware
0x5000 0x7FFF Unused (12 KB)
0x8000 0xEFFF Additional Display Memory
0xF000 0xFFFF Primary Display Memory

The boards in the system are connected via a motherboard with 2x36 edge card connectors.

Motherboard Bus Signals
Flip Side Pin Pin Component Side
GND 1- -2 GND
-5V 3- -4 -5V
SPARE  6 SPARE
-12V 7- -8 -12V
SPARE  10 SPARE
12V 11- -12 12V
SPARE 13   14 SPARE
+5V 15- -16 +5V
RDIS 17@  18 SPARE
BA0 19# #20 BA1
BA2 21# #22 BA3
BA4 23# #24 BA5
BA6 25# #26 BA7
BA8 27# #28 BA9
BA10 29# #30 BA11
BA12 31# #32 BA13
BA14 33# #34 BA15
WACK 35# $36 RESET
PWDN 37- %38 IOADR
READ 39# #40 WRITE
WAIT 41@ @42 BRQ
BGIN 43* *44 BGOUT
IA0 45% %46 IA1
IA2 47% @48 IRQ
LCLK 49% %50 HCLK
PB0 51* *52 PB1
PB2 53* *54 PB3
PB4 55* *56 PB5
PB6 57* *58 PB7
PB8 59* *60 PB9
PB10 61* *62 PB11
BD0 63# #64 BD1
BD2 65# #66 BD3
BD4 67# #68 BD5
BD6 69# #70 BD7
GND 71- -72 GND

Pin numbers are be annotated with a designation indicating their electrical characteristics as follows:

- Power supply pin
% Pin driven by the processor board with no pull up resistor
$ Pin driven by the processor board with a pull up through a 2.7K resistor to +4.3V
# Tri-state pin with a pull up through a 2.7K resistor to +4.3V
@ Open collector pin with a pull up through a 1K resistor to +4.3V
* Non-bused signals which are not necessarily the same at every connector.

Manx

Images

References