pc98_usb: Update README
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tmk
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2 changed files with 11 additions and 138 deletions
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@ -59,7 +59,6 @@ CONSOLE_ENABLE ?= yes # Console for debug
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COMMAND_ENABLE ?= yes # Commands for debug and configuration
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#NKRO_ENABLE ?= yes # USB Nkey Rollover
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UNIMAP_ENABLE ?= yes
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#KYMAP_SECTION_ENABLE ?= yes
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# Boot Section Size in bytes
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@ -1,14 +1,14 @@
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PC98 to USB keyboard protocol converter
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=======================================
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Main target is TMK prebuilt converter(ATMega32u2) but it will work on dev boards with ATMega32u4.
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TMK Keyboard protocol converter for NEC PC-9801 series that allows you to use PC-9801 keyboard on modern USB PC.
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To initialize keyboard correctly you have to connect keyboard with converter first and then plug them into USB port.
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Otherwise, keyboard may not work.
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Main target is TMK prebuilt converter(ATMega32u2) but it will work on dev boards with ATMega32u4.
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You can buy [TMK prebuilt converter](https://geekhack.org/index.php?topic=72052.0) here to support this project.
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Discuss or report issue on github or [this thread](https://geekhack.org/index.php?topic=110094.0).
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See [this wiki page](https://github.com/tmk/tmk_keyboard/wiki/PC-9801-Keyboard) for PC98 keyboard technical infos.
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@ -26,9 +26,7 @@ On host/converter:
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(receptacle)
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Wiring: You can change this with editing config.h.
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Pin mini DIN MCU
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Pin mini DIN AVR Pins
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----------------------------------
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1 ~RST(TXD) PD3
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2 GND GND
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@ -41,13 +39,6 @@ Wiring: You can change this with editing config.h.
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Protocol
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--------
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Signal: Asynchronous, Positive logic, 19200baud, Least bit first
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Frame format: 1-Start bit(Lo), 8-Data bits, Odd-Parity, 1-Stop bit
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Prebilt Firmware
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----------------
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Prebuilt firmware HEX files are available under 'binary' directory.
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@ -56,6 +47,7 @@ Prebuilt firmware HEX files are available under 'binary' directory.
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Build Firmware
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--------------
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### TMK PC98 Converter
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Just use 'make' to bild firmware for TMK PC98 converter(ATMega32u2).
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$ make clean
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@ -67,6 +59,8 @@ To flash firmware run this command
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then push button on the converter to flash firmware.
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### Ohter boards
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If you are using ATMega32u4 based board use following commands to get firmware HEX file.
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$ make -f Makefile.32u4 clean
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@ -76,76 +70,10 @@ And flash it on your board using specific program method.
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PC98 Scan Codes
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---------------
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,---. ,---. ,------------------------. ,------------------------. ,------------------------.
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|Stp| |Cpy| | F1 | F2 | F3 | F4 | F5 | | F6 | F7 | F8 | F9 | F10| | F11| F12| F13| F14| F15|
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`---' `---' `------------------------' `------------------------' `------------------------'
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,-------------------------------------------------------------. ,-------. ,---------------.
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| Esc| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|JPY|Bspc| |Ins|Del| |Hom|Hlp| -| /|
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|-------------------------------------------------------------| |-------| |---------------|
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| Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| | |RUp|RDn| | 7| 8| 9| *|
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|-------------------------------------------------------`Enter| |-------| |---------------|
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|Ctl|Cap| A| S| D| F| G| H| J| K| L| ;| '| \| | | Up | | 4| 5| 6| +|
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|-------------------------------------------------------------| |-------| |---------------|
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| Shift | Z| X| C| V| B| N| M| ,| .| /| RO| Shift | |Lef|Rig| | 1| 2| 3| =|
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`-------------------------------------------------------------' |-------| |---------------|
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|Kana|Win|GRP|NFER| Space |XFER| ^2|Win| ^3| | Down | | 0| ,| .| ^1|
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`-------------------------------------------------------' `-------' `---------------'
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^1: Enter on keypad is identical to Enter on alphanumeric portion
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^2: ALT on DIGITAL WAVE Dboard while Menu on PC-9821 keyboard
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^3: HOME on PC98XL keyboard
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^4: CAPS and Kana are locking keys, either mechanically or by firmware emulation
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,---. ,---. ,------------------------. ,------------------------. ,------------------------.
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| 60| | 61| | 62 | 63 | 64 | 65 | 66 | | 67 | 68 | 69 | 6A | 6B | | 52 | 53 | 54 | 55 | 56 |
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`---' `---' `------------------------' `------------------------' `------------------------'
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,-------------------------------------------------------------. ,-------. ,---------------.
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| 00 | 01| 02| 03| 04| 05| 06| 07| 08| 09| 0A| 0B| 0C| 0D| 0E | | 38| 39| | 3E| 3F| 4D| 41|
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|-------------------------------------------------------------| |-------| |---------------|
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| 0F | 10| 11| 12| 13| 14| 15| 16| 17| 18| 19| 1A| 1B| | | 36| 37| | 42| 43| 44| 45|
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|-------------------------------------------------------` 1C | |-------| |---------------|
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| 74| 71| 1D| 1E| 1F| 20| 21| 22| 23| 24| 25| 26| 27| 28| | | 3A | | 46| 47| 48| 49|
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|-------------------------------------------------------------| |-------| |---------------|
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| 70 | 29| 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 70/7D | | 3B| 3C| | 4A| 4B| 4C| 4D|
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`-------------------------------------------------------------' |-------| |---------------|
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| 72 | 77| 73| 51 | 34 | 35 | 79| 78| 5E| | 3D | | 4E| 4F| 50| 1C|
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`-------------------------------------------------------' `-------' `---------------'
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5E: HOME on PC98XL keyboard
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79: ALT on DIGITAL WAVE Dboard
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77,78,79: Left Win, right Win and Application on PC-9821 keyboard
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PC98 keyboard commands
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----------------------
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http://www.webtech.co.jp/company/doc/undocumented_mem/io_kb.txt
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response from keyboard:
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FAh: ACK
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FCh: NACK
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Inhibit repeating key:
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9Ch, 70h
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LED control:
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9Dh 7xh
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second byte:
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0111 xxxx
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|||`- NumLock
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||`-- ?
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|`--- CapsLock
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`---- Kana
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Enabling Win and App key on PC-9821 keyboard:
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95h, 03h
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Raku Raku keyboard support
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--------------------------
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This is not supported actively anymore.
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NEC PC-9801-98-S02 - raku raku keyboard:
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https://deskthority.net/photos-f62/nec-pc-9801-98-s02-t5212.html
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@ -155,59 +83,5 @@ To build firmware for the keyboard
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$ make KEYMAP=rakuraku
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$ make KEYMAP=rakuraku dfu
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Its scan code map is very different from standard types. This is not tested.
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Other PC98 converter projects and resource
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------------------------------------------
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### TMK wiki
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- https://github.com/tmk/tmk_keyboard/wiki/PC-9801-Keyboard
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### PC-9800シリーズ テクニカルデータブック HARDWARE 編 1993年 p139, p343
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- https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n151
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- https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n355
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### PC98 to USB
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- http://davy.nyacom.net/kbd98usb/
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### PC98 to PS/2
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- http://www.tsp.ne.jp/~sawada/mago/c_gka98at.htm
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- http://www.tsp.ne.jp/~sawada/mago/src/gka98at.asm
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### Scan code
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- http://ixsvr.dyndns.org/usb2pc98
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NOTES
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-----
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### Tested on
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- PC-9801V
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- DIGITAL WAVE Dboard
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### RDY
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PC98 host keeps RDY line high to prevent keyboard from sending data while processing.
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- https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n359
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PC-9801V keyboard requires RDY pulse as acknowledgement from host, it doesn't next data without this. Dboard doesn't need this.
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### Inhibit key repeating
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The command(9Ch, 70h) works with Raku Raku keybaord but not with Dboard.
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### LED indicater
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Dboard has LEDs but replys with FA to 9D command but ignore it. The LED indicates just its internal states. Dboard replays with FA to 9C command but it doesn't seem to understand repeat setting.
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PC-9801V has no LEDs and doesn't accept LED command. It replys with 9D to 9D command. PC-9801V doesn't accept repeat setting command. It replys with 9C to 9C command.
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### PC-9801V
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Note that you have to connect this keyboard with converter before plug in USB port. It seems this keyboard requires for host to send any command before starting to send scan code.
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### Connection order
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Converter doesn't support hotplugging due to limitation of PC-9801 keyboard.
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You will have to plug keyboard into converter during without power first, and then plug them into USB port.
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Its scan code map is very different from standard types.
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See `unimap_trans.h` and `unimap_rakuraku.c`.
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