NAME  

SDK-85

MANUFACTURER  

Intel

TYPE  

Professional Computer

ORIGIN  

U.S.A.

YEAR  

1977

BUILT IN LANGUAGE 

Monitor in ROM

KEYBOARD  

24 key hexadecimal with monitor command keys

CPU  

8085A

SPEED  

3 MHz. 1.3 ╣s. instruction cycle

COPROCESSOR  

None

RAM  

256 bytes expandable to 512 bytes

VRAM  

None

ROM  

2 KB

SIZE / WEIGHT 

30.5 (W) x 25.7 (D) x 1.3 (H) cm.

I/O PORTS 

Parallel (38 lines expandable to 76 lines), Serial 110 baud

BUILT IN MEDIA 

None

OS  

Monitor in ROM

POWER SUPPLY 

External 5V/12V power supply unit

PERIPHERALS  

Expansion area on board

PRICE  

Unknown

 

SDK-85

SDK-85

 Each time Intel launched a new microprocessor, they provided simultaneously a System Development Kit (SDK) allowing computer company engineers as well as university students to introduce them to the new processor concepts and features.

The SDK-85 was a complete 8085A (5 for 'first 5 Volt microprocessor') microcomputer system on a single board including ROM and RAM memory, a 24 key hexadecimal keyboard, a 6 digit LED display, I/O connections


and an expansion area allowing memory and I/O expansions as well as hardware experiments.

2 KB monitor software provided the same commands as the SDK-86 board. User could enter and read program results through either the built-in keyboard/display or using a serial Teletype through the built-in serial TTY interface. A 38 lines parallel interface was also available.

A large set of manuals were delivered with the board: MCS-85 (processor) and SDK-85 (board) user manuals, 8085 Assembly Language Programming Manual, full circuit schematics of the PCB, a full dump of the ROM monitor program, programming examples and application notes.