1 PC98 to USB keyboard protocol converter
2 =======================================
3 Target MCU is ATMega32u2 but other USB capable AVR will also work.
20 Wiring: You can change this with editing config.h.
23 ----------------------------------
38 Signal: Asynchronous, Positive logic, 19200baud, Least bit first
39 Frame format: 1-Start bit(Lo), 8-Data bits, Odd-Parity, 1-Stop bit
45 Prebuilt firmware HEX files are available under 'binary' directory.
51 Just use 'make' to bild firmware for TMK PC98 converter(ATMega32u2).
56 To flash firmware run this command
60 then push button on converter to flash firmware.
62 If you are using ATMega32u4 based board use following commands to get firmware HEX file.
64 $ make -f Makefile.32u4 clean
65 $ make -f Makefile.32u4
67 And flash it on your board using specific program method.
73 ,---. ,---. ,------------------------. ,------------------------. ,------------------------.
74 |Stp| |Cpy| | F1 | F2 | F3 | F4 | F5 | | F6 | F7 | F8 | F9 | F10| | F11| F12| F13| F14| F15|
75 `---' `---' `------------------------' `------------------------' `------------------------'
76 ,-------------------------------------------------------------. ,-------. ,---------------.
77 | Esc| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|JPY|Bspc| |Ins|Del| |Hom|Hlp| -| /|
78 |-------------------------------------------------------------| |-------| |---------------|
79 | Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| | |RUp|RDn| | 7| 8| 9| *|
80 |-------------------------------------------------------`Enter| |-------| |---------------|
81 |Ctl|Cap| A| S| D| F| G| H| J| K| L| ;| '| \| | | Up | | 4| 5| 6| +|
82 |-------------------------------------------------------------| |-------| |---------------|
83 | Shift | Z| X| C| V| B| N| M| ,| .| /| RO| Shift | |Lef|Rig| | 1| 2| 3| =|
84 `-------------------------------------------------------------' |-------| |---------------|
85 |Kana|Win|GRP|NFER| Space |XFER| ^2|Win| ^3| | Down | | 0| ,| .| ^1|
86 `-------------------------------------------------------' `-------' `---------------'
87 ^1: Enter on keypad is identical to Enter on alphanumeric portion
88 ^2: ALT on DIGITAL WAVE Dboard while Menu on PC-9821 keyboard
89 ^3: HOME on PC98XL keyboard
90 ^4: CAPS and Kana are locking keys, either mechanically or by firmware emulation
93 ,---. ,---. ,------------------------. ,------------------------. ,------------------------.
94 | 60| | 61| | 62 | 63 | 64 | 65 | 66 | | 67 | 68 | 69 | 6A | 6B | | 52 | 53 | 54 | 55 | 56 |
95 `---' `---' `------------------------' `------------------------' `------------------------'
96 ,-------------------------------------------------------------. ,-------. ,---------------.
97 | 00 | 01| 02| 03| 04| 05| 06| 07| 08| 09| 0A| 0B| 0C| 0D| 0E | | 38| 39| | 3E| 3F| 4D| 41|
98 |-------------------------------------------------------------| |-------| |---------------|
99 | 0F | 10| 11| 12| 13| 14| 15| 16| 17| 18| 19| 1A| 1B| | | 36| 37| | 42| 43| 44| 45|
100 |-------------------------------------------------------` 1C | |-------| |---------------|
101 | 74| 71| 1D| 1E| 1F| 20| 21| 22| 23| 24| 25| 26| 27| 28| | | 3A | | 46| 47| 48| 49|
102 |-------------------------------------------------------------| |-------| |---------------|
103 | 70 | 29| 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 70/7D | | 3B| 3C| | 4A| 4B| 4C| 4D|
104 `-------------------------------------------------------------' |-------| |---------------|
105 | 72 | 77| 73| 51 | 34 | 35 | 79| 78| 5E| | 3D | | 4E| 4F| 50| 1C|
106 `-------------------------------------------------------' `-------' `---------------'
107 5E: HOME on PC98XL keyboard
108 79: ALT on DIGITAL WAVE Dboard
109 77,78,79: Left Win, right Win and Application on PC-9821 keyboard
113 PC98 keyboard commands
114 ----------------------
115 http://www.webtech.co.jp/company/doc/undocumented_mem/io_kb.txt
117 response from keyboard:
121 Inhibit repeating key:
134 Enabling Win and App key on PC-9821 keyboard:
139 Raku Raku keyboard support
140 --------------------------
141 NEC PC-9801-98-S02 - raku raku keyboard:
142 https://deskthority.net/photos-f62/nec-pc-9801-98-s02-t5212.html
144 To build firmware for the keyboard
146 $ make KEYMAP=rakuraku clean
147 $ make KEYMAP=rakuraku
148 $ make KEYMAP=rakuraku dfu
150 Its scan code map is very different from standard types. This is not tested.
154 Other PC98 converter projects and resource
155 ------------------------------------------
156 PC-9800シリーズ テクニカルデータブック HARDWARE 編 1993年 p139, p343
157 https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n151
158 https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n355
161 http://davy.nyacom.net/kbd98usb/
164 http://www.tsp.ne.jp/~sawada/mago/c_gka98at.htm
165 http://www.tsp.ne.jp/~sawada/mago/src/gka98at.asm
168 http://ixsvr.dyndns.org/usb2pc98
176 - DIGITAL WAVE Dboard
180 PC98 host keeps RDY line high to prevent keyboard from sending data while processing.
182 https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n359
184 PC-9801V keyboard requires RDY pulse as acknowledgement from host, it doesn't next data without this. Dboard doens't need this.
187 ### Inhibit key repeating
188 The command(9Ch, 70h) works with Raku Raku keybaord but not with Dboard.
191 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.
193 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.
197 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.