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SDK85

Name: SDK85
Availability: InStock
Rating: 1 (1 reviews)

Relive the golden age of microcomputing. Code, debug, and execute assembly on a bit-accurate emulation of the legendary 1970s hardware, complete with hex-pad, TTY mode, and the original monitor ROM.

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Key Figures

Downloads

300

User Rating

1.0/5

Total Ratings

Publisher

Juergen Schuck

Relive the Golden Age of Microcomputing

A faithful, bit-perfect emulation of the Intel SDK-85 System Design Kit, bringing the tactile 1975 machine code experience to your modern device.

Authentic Hexpad Interface

Code exactly like the original engineers with a precise recreation of the hexpad and the iconic six-digit seven-segment display.

Full TTY Terminal Support

Switch seamlessly to TTY mode with a swipe, emulating the serial IO pins to connect a terminal for more complex programming tasks.

The following screenshots and description are sourced directly from the app's official store listing and are the property of the app developer.

App Store

Screenshots

SDK85 - SDK85 app interface showing a hexadecimal keypad and seven segment display over an Intel 8085 circuit board background — SDK85 app interface showing a hexadecimal keypad and seven segment display over an Intel 8085 circuit board background

SDK85 - Interface of the SDK85 app featuring a hexadecimal keypad and a seven segment display over a green circuit board background — Interface of the SDK85 app featuring a hexadecimal keypad and a seven segment display over a green circuit board background

SDK85 - SDK85 emulator TTY mode terminal showing a memory hex dump and a vintage-style keyboard — SDK85 emulator TTY mode terminal showing a memory hex dump and a vintage-style keyboard

SDK85 - SDK85 emulator app in terminal mode showing hexadecimal machine code and a retro style virtual keyboard — SDK85 emulator app in terminal mode showing hexadecimal machine code and a retro style virtual keyboard

Description

An emulator of the SDK-85 System Design Kit issued by Intel in the mid-seventies. The kit featured an 8085 micro processor, some basic IO chips, and a UI comprised of a hexpad and a six-digit seven-segment display. There was also a ROM plugged onto the board which contained a monitor program to enter and execute machine code on the 8085. The app emulates an 8085 and executes the monitor (shippment granted by Intel as long as the app is free and educational). The original kit leveraged the serial IO pins of the 8085 to connect a TTY as a somewhat more comfortable alternative to the hexpad/ display UI used by the monitor on startup. A wipe-left gesture shifts in a simple terminal and the monitor switches to TTY mode. To use the app one needs to get a copy of the original SDK-85 System Design Kit User‘s Manual (ask Google) and work it thru. Some knowledge of the 8085 and its instruction set is helpful as well, and being a boomer nerd who loved to program micro computers when young (and still does) is key. Intel designed the monitor to run in a loop that keeps the CPU constantly busy (on a single thread). To prevent the battery from draining the app suspends executing after 15 seconds indicated by a slightly blurred display. Tapping the centered play-pause button resumes the monitor or any other program in execution. Timeout and a few other options can be changed in the app‘s entry in Settings.