DAI Personal Computer

Computer published 47 years ago:

DAI Personal Computer (c) 1978 Data Applications International.

- TECHNICAL -

CPU: Intel 8080A at 2 MHz
Memory: a maximum of 48 kB dynamic RAM, 24 kB ROM and 256 Bytes of static RAM (stack RAM)
Keyboard: 56 Keys

Video interface: PAL compatible UHF CH 36 color-TV (antenna) output signal with audio
- Text mode: 60 characters × 24 lines (66 characters per line supported)
- Graphics modes: Low - 88 x 65 pixels; Medium - 176 x 130 pixels; High - 352 x 260 pixels; Very high - 528 x 240 pixels (non-square)
- Available colors: 4 or 16 colors (16 color mode was actually 4 color palette)

Sound generation: 3 frequency generators + 1 noise generator
Game controllers: 2 input interfaces for paddles or joysticks (DIY). Each can control three 0-5V inputs and a switch.
Storage: 2 separate audio-cassette interfaces, using a cable for data INPUT/OUTPUT and START/STOP switch, (600 Baud)

Alternative main storage systems:
- Memocom MDCR-D, Mini Digital Cassette Recorder (which used Philips minicassettes)
- Two 5.25 inch floppy disk drives, 2 x 180K (which enabled the use of CP/M).
Compatible with optional card rack, the ("DAI Real World Card System"), control system.

I/O Connectors:
Serial port RS-232, DB-25 female.
2 audio-cassette ports, 2 x 6 pin DIN female.
Parallel port DCE-Bus, DAI proprietary 3 x 8 bit parallel port, 36 pin DIL male.
2 Paddle interfaces, 2 x 6 pin DIN female.
Stereo audio output, 6 pin DIN female.
UHF video and audio output, RCA (cinch) female.
AC power input, with voltage selector 220-110 volt, figure 8 shape AC power 2 pins male.

System software:
a machine code monitor with the following commands:
LOOK
DISPLAY
GO
FILL
SUBSTITUTE
MOVE
EXAMINE
EXAMINE REGISTERS
VECTOR EXAMINE
VECTOR EXAMINE BYTES
READ
WRITE
a built in DAI BASIC interpreter.

The system was also supported with an 8080-Assembler.
Miscellaneous: a true random number generator implemented in hardware.

- CONTRIBUTE -

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