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@@ -1,10 +1,16 @@
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-4704 Keyboard
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-=============
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-Keyboard Models:
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- Model 100 6019273 50-key (grid layout)
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- Model 200 6019284 62-key Alpha(60% layout)
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- Model 300 6019303 77-key Expanded Alpha
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- Model 400 6020218 107-key Full key
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+IBM 4704 Keyboard
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+=================
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+IBM capacitive switch models:
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+ 6019273 Model 100 50-key (grid layout) http://kishy.dyndns.org/?p=977
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+ 6019284 Model 200 62-key Alpha(60% layout) http://kishy.dyndns.org/?p=894
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+ 6019303 Model 300 77-key Expanded Alpha http://kbtalking.cool3c.com/article/23272
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+ 6020218 Model 400 107-key Full key http://kishy.dyndns.org/?p=980
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+
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+Alps switch(vintage Green) models:
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+ 5954339 Japanese 102-key http://deskthority.net/post87127.html#p87127
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+ 6112883 Japanese 102-key http://geekhack.org/index.php?topic=52888.msg1194489#msg1194489
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+ 6112884 Japanese 102-key http://geekhack.org/index.php?topic=50437.msg1193047#msg1193047
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+ 6341739 Chinese 102-key http://geekhack.org/index.php?topic=52888.msg1176566#msg1176566
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Resourse
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--------
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@@ -16,11 +22,19 @@ http://ed-thelen.org/comp-hist/IBM-ProdAnn/4700.pdf
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-4704 Keyboard Protocol
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-======================
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-On powering up the keyboard sends keyboard id; A3h for 6019284(62-key), for example.
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-After that firmware enters FC command mode and waits for parameter data from host
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-so that it doesn't send any scancode until you send 'FF'(End of FC command).
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+IBM 4704 Keyboard Protocol
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+==========================
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+On powering up keyboard sends keyboard ID; A3h for 6019284(62-key), for example.
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+After that the keyboard enters FC command mode and waits for parameter data from host
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+so that it doesn't send any scancode until you send 'FF'(End of FC command mode).
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+
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+ Keyboard ID
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+ -------------------------------
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+ Model 100 50-key A2h
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+ Model 200 62-key A3h
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+ Model 300 77-key A4h
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+ Model 400 107-key ??
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+ Japanese/Chinese 102-key A6h
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Connector
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@@ -113,27 +127,34 @@ NOTE: When break code is enabled the key sends scancode with setting 7th bit on
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and without it on release. That is, '`' sends 80h on press and 00h on release.
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-keyboard command
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+Keyboard command
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----------------
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- FF Soft Reset(0008h)
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- FE Resend(00e8h)
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- FD Buzzer stop?(00edh)
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- FC Set Key flag(00f6h)
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- FB Soft Reset(0008h)
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- FA Reset(0000h)
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+Keyboard accepts these commands from host.
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+
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+ Description Entry point
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+ -----------------------------------------------------------
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+ FF Soft Reset 0008h
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+ FE Resend 00e8h
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+ FD Buzzer(emits a short beep) 00edh
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+ FC Set Key Flag 00f6h
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+ FB Soft Reset 0008h
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+ FA Reset 0000h
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Keyboard response
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-----------------
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- FF Not exist. [Outgoing buffer cannot have FFh(00h in fact)]
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- FE Overflow(key event/receive data) at 00c5h, 0346h
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- FE Memory test error at 0224h
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- FD Command out of bound at 00d8h
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+Keyobard sends these bytes to host.
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+
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+ Description Entry point
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+ -----------------------------------------------------------
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+ FE Overflow(key event/receive data) 00c5h, 0346h
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+ Memory test error 0224h
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+ FD Command out of bound 00d8h
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Key out of bound
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- 7E Read/Parity error in receive from host at 00bch
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+ 7E Read/Parity error in receive from host 00bch
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-Set Key flag command(FC)
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+Set Key Flag command(FC)
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------------------------
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After 'Power on Reset' firmware enters this command mode and waits for data from host,
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so that you don't need to send 'FC' and it doesn't send any scancode until you send 'FF'.
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tmk