Bull 115ST

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Bull 115ST
Bud-115ST-Front.JPG
Part number 60164180-001 Rev J
Branding Bull
Manufacturer Honeywell
Keyswitches Micro Switch ST
Interface DIN 5-180
Weight 2.3 kg

The Bull 115ST is a part of the ST series of keyboards manufactured by Honeywell using the ST slider over membrane switch. The 115 in the model number refers to the number of keys. The ST line also includes 83, 101 and 122 key variants.

Switches

The Bull 115ST uses two variants of the Micro Switch ST key switch, black and tan. Both use use rubber domes. The black variant is used for all switches that register a keypress. The tan is only used for the space bar. The space bar has two switches, one black and one tan; one at each end. The black switch registers the keypress. The tan seems to be there for balance. Interestingly, the dome of the tan switch is composed of brown colored rubber as compared to the black for the black switches. The two feel very similar.

Scan Codes

These scan codes were taken from an unlabeled Honeywell version which uses the XT protocol, connected through a Soarer's Converter. The "reserved" scan-codes are documented in the documentation for said converter and can readily be utilized, which is good, because nearly half of the nonstandard keys send "reserved" scan codes.

Wide blank key to the left of F1: BE "Reserved"

Blank key to the left of Shift: E2 left Alt

F11: 64 "Europe 2"

F12: 44 "F11" (For fuck's sake)

Blank Wide key to the right of F12: 45 F12 (Really?)

Leftmost blank key top row over nav cluster: B8 "Reserved"

Center blank key top row over nav cluster: B9 "Reserved"

Rightmost blank key top row over nav cluster: BA "Reserved"

1st Blank Key over Numpad: 55 Keypad splat "*"

2nd Blank Key over Numpad: 53 NumLock

3rd Blank Key over Numpad: 47 Scroll Lock

4th Blank Key over Numpad: Alternates between B6 "Reserved" and 70 F21 (Wut?)

Blank Key Left of Spacebar: "Keyboard International 6" (PC9800 keypad ",")

Blank Key Right of Spacebar: B7 "Reserved"

Escape: 35 Backtick/Tilde

Blank Key to the right of square brackets: 67 Keypad =

Blank Key one more to the right of above: B0 "Reserved"

Blank Key to the right of Shift: C2 "Reserved"

Blank Key one more to the right of above: B2 "Reserved"

Leftmost Blank Key directly over nav cluster: BB "Reserved"

Center Blank Key directly over nav cluster: BC "Reserved"

Rightmost Blank Key directly over nav cluster: BD "Reserved"

Insert: 68 F13

eop Erase eof: 69 F14

Delete: 6A F15

Up Arrow: 6B F16

Left Arrow: 6C F17

Home: 6D F18

Right Arrow: 6E F19

Down Arrow: 6F F20

Reset: 71 F22

Backtab: 72 F23

Line Feed: C1 "Reserved"

Xmit: 88 "Keyboard International 2" Katakana/Hiragana

Numpad Tab: B1 "Reserved"

Numpad Carriage Return: B3 "Reserved"

Numpad ,: "Keyboard International 1" (Ro)

Gallery