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qmk_firmware/keyboards/converter/ibm_5291
Drashna Jaelre faaaa134fd
Replace DEBOUNCING_DELAY (deprecated) with DEBOUNCE (#5997)
5 years ago
..
keymaps Keyboard: 5291 firmware to replace the existing soarers controller firmware (#4483) 6 years ago
config.h Replace DEBOUNCING_DELAY (deprecated) with DEBOUNCE (#5997) 5 years ago
ibm_5291.c Keyboard: 5291 firmware to replace the existing soarers controller firmware (#4483) 6 years ago
ibm_5291.h Keyboard: 5291 firmware to replace the existing soarers controller firmware (#4483) 6 years ago
info.json converter/ibm_5291: Configurator support and readme cleanup (#4654) 6 years ago
matrix.c Replace DEBOUNCING_DELAY (deprecated) with DEBOUNCE (#5997) 5 years ago
matrix.csv Keyboard: 5291 firmware to replace the existing soarers controller firmware (#4483) 6 years ago
readme.md converter/ibm_5291: Configurator support and readme cleanup (#4654) 6 years ago
rules.mk Fix mixed tabs/spaces and typos in keyboards/converter makefiles (#5041) 6 years ago

readme.md

IBM 5291 keyboard converter

IBM 5291

A converter for the eponymous keyboard.

Keyboard Maintainer: Listofoptions
Hardware Supported: IBM 5291, Teensy 2.0

Make example for this keyboard (after setting up your build environment):

make converter/ibm_5291:default

See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.

The pinout is as follows:

IBM5291Cable to Pinhead14

pin description
1 GND
2 NC
3 GND
4 GN)
5 +5V
6 D0
7 D1
8 D2
9 D3
10 D4
11 D5
12 D6
13 Strobe
14 Out

The pins on this connector are organized
here

IBM52912 Cable with DB15M connector

pin description
1,2,3 GND
4 +5V
5 D0
6 D1
7 D2
8 D3
9 D4
10 D5
11 D6
12 Strobe
13 Out
14 PE
15 NC

The above connector is actually numbered so it should be easier to determine where the needed connections are.

To connect to the teensy, the following are pins are needed (if you should choose not set your own):

  • PB0 -> PB6 are connected to D0 -> D6
  • +5V is connected to the corresponding teensy pin
  • gnd is as well, only one of the gnd pins needs to be connected though.
  • strobe is connected to pin PD1
  • data is connected to PD0
  • PE does not need to be connected to anything, but it could also be connected to gnd

sources: http://www.retrocomputing.eu/documents/5291_MaintenanceLibrary.pdf