PC98 to USB keyboard protocol converter
=======================================
-Target MCU is ATMega32u4 but other USB capable AVR will also work.
+Target MCU is ATMega32u2 but other USB capable AVR will also work.
Connector
---------
+On host/converter:
8Pin mini DIN
___ ___
/ 8 7 6 \
| 5 4 3 |
\_ 2 1 _/
- \_____/
+ \_____/
(receptacle)
-Wiring: You can change this with ediging config.h.
+Wiring: You can change this with editing config.h.
Pin mini DIN MCU
----------------------------------
- 1 ~RST PD1
+ 1 ~RST(TXD) PD3
2 GND GND
3 ~RDY PD4
4 RXD PD2
- 5 ~RTY PD5
- 6 NC
- 7 NC
+ 5 ~RTY PD1
+ 6 NC
+ 7 NC
8 5V VCC
Protocol
--------
-Singnal: Asynchronous, Positive logic, 19200baud, Least bit first
+Signal: Asynchronous, Positive logic, 19200baud, Least bit first
Frame format: 1-Start bit(Lo), 8-Data bits, Odd-Parity, 1-Stop bit
-This converter uses software method for testing purpose. AVR UART engine will work better.
-
-
Build Firmware
--------------
-Just use 'make'
+Just use 'make' to bild firmware for TMK PC98 converter.
- $ cd pc98_usb
+ $ make clean
$ make
-Then, load the binary to MCU with your favorite programmer.
+To flash firmware
+
+ $ make dfu
+
+then push button on converter to flash firmware.
+
+If you are using ATMega32u4 based board instead of premade TMK PC98 converter(ATMega32u2) use following commands.
+
+ $ make -f Makefile.32u4 clean
+ $ make -f Makefile.32u4
+ $ make -f Makefile.32u4 dfu
+
+
+
+PC98 Scan Codes
+---------------
+ ,---. ,---. ,------------------------. ,------------------------. ,------------------------.
+ |Stp| |Cpy| | F1 | F2 | F3 | F4 | F5 | | F6 | F7 | F8 | F9 | F10| | F11| F12| F13| F14| F15|
+ `---' `---' `------------------------' `------------------------' `------------------------'
+ ,-------------------------------------------------------------. ,-------. ,---------------.
+ | Esc| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|JPY|Bspc| |Ins|Del| |Hom|Hlp| -| /|
+ |-------------------------------------------------------------| |-------| |---------------|
+ | Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| | |RUp|RDn| | 7| 8| 9| *|
+ |-------------------------------------------------------`Enter| |-------| |---------------|
+ |Ctl|Cap| A| S| D| F| G| H| J| K| L| ;| '| \| | | Up | | 4| 5| 6| +|
+ |-------------------------------------------------------------| |-------| |---------------|
+ | Shift | Z| X| C| V| B| N| M| ,| .| /| RO| Shift | |Lef|Rig| | 1| 2| 3| =|
+ `-------------------------------------------------------------' |-------| |---------------|
+ |Kana|Win|GRP|NFER| Space |XFER| ^2|Win| ^3| | Down | | 0| ,| .| ^1|
+ `-------------------------------------------------------' `-------' `---------------'
+ ^1: Enter on keypad is identical to Enter on alphanumeric portion
+ ^2: ALT on DIGITAL WAVE Dboard while Menu on PC-9821 keyboard
+ ^3: HOME on PC98XL keyboard
+ ^4: CAPS and Kana are locking keys, either mechanically or by firmware emulation
+
+
+ ,---. ,---. ,------------------------. ,------------------------. ,------------------------.
+ | 60| | 61| | 62 | 63 | 64 | 65 | 66 | | 67 | 68 | 69 | 6A | 6B | | 52 | 53 | 54 | 55 | 56 |
+ `---' `---' `------------------------' `------------------------' `------------------------'
+ ,-------------------------------------------------------------. ,-------. ,---------------.
+ | 00 | 01| 02| 03| 04| 05| 06| 07| 08| 09| 0A| 0B| 0C| 0D| 0E | | 38| 39| | 3E| 3F| 4D| 41|
+ |-------------------------------------------------------------| |-------| |---------------|
+ | 0F | 10| 11| 12| 13| 14| 15| 16| 17| 18| 19| 1A| 1B| | | 36| 37| | 42| 43| 44| 45|
+ |-------------------------------------------------------` 1C | |-------| |---------------|
+ | 74| 71| 1D| 1E| 1F| 20| 21| 22| 23| 24| 25| 26| 27| 28| | | 3A | | 46| 47| 48| 49|
+ |-------------------------------------------------------------| |-------| |---------------|
+ | 70 | 29| 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 70/7D | | 3B| 3C| | 4A| 4B| 4C| 4D|
+ `-------------------------------------------------------------' |-------| |---------------|
+ | 72 | 77| 73| 51 | 34 | 35 | 79| 78| 5E| | 3D | | 4E| 4F| 50| 1C|
+ `-------------------------------------------------------' `-------' `---------------'
+ 5E: HOME on PC98XL keyboard
+ 79: ALT on DIGITAL WAVE Dboard
+ 77,78,79: Left Win, right Win and Application on PC-9821 keyboard
+
+
+
+PC98 keyboard commands
+----------------------
+http://www.webtech.co.jp/company/doc/undocumented_mem/io_kb.txt
+
+response from keyboard:
+ FAh: ACK
+ FCh: NACK
+
+Inhibit repeating key:
+ 9Ch, 70h
+
+LED control:
+ 9Dh 7xh
+
+ second byte:
+ 0111 xxxx
+ |||`- NumLock
+ ||`-- ?
+ |`--- CapsLock
+ `---- Kana
+
+Enabling Win and App key on PC-9821 keyboard:
+ 95h, 03h
+
+
+
+Raku Raku keyboard support
+--------------------------
+NEC PC-9801-98-S02 - raku raku keyboard:
+https://deskthority.net/photos-f62/nec-pc-9801-98-s02-t5212.html
+
+To build firmware for the keyboard
+
+ $ make KEYMAP=rakuraku clean
+ $ make KEYMAP=rakuraku
+ $ make KEYMAP=rakuraku dfu
+
+Its scan code map is very different from standard types. This is not tested.
Other PC98 converter projects and resource
------------------------------------------
+PC-9800シリーズ テクニカルデータブック HARDWARE 編 1993年 p139, p343
+https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n151
+https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n355
+
PC98 to USB
http://davy.nyacom.net/kbd98usb/
PC98 to PS/2
http://www.tsp.ne.jp/~sawada/mago/c_gka98at.htm
+http://www.tsp.ne.jp/~sawada/mago/src/gka98at.asm
-PC98 keyboard commands
-http://www.webtech.co.jp/company/doc/undocumented_mem/io_kb.txt
+scan code:
+http://ixsvr.dyndns.org/usb2pc98
+
+
+
+NOTES
+-----
+### Tested on
+- PC-9801V
+- DIGITAL WAVE Dboard
+
+
+### RDY
+PC98 host keeps RDY line high to prevent keyboard from sending data while processing.
+
+https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n359
+
+PC-9801V keyboard requires RDY pulse as acknowledgement from host, it doesn't next data without this. Dboard doens't need this.
+
+
+### Inhibit key repeating
+The command(9Ch, 70h) works with Raku Raku keybaord but not with Dboard.
+
+### LED indicater
+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.
+
+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.
+
+
+## PC-9801V
+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.
projects / max / tmk_keyboard.git / blobdiff