X-Git-Url: https://git.friedersdorff.com/?a=blobdiff_plain;f=converter%2Fpc98_usb%2FREADME;h=4d0d0bfe38dda5c34e2e4c8561d2f2e717e14b46;hb=ffb52ab0c98540f6305a7c1d82b50c8d6611a727;hp=6da54178bedfb936a5c4a64050ab056be41b3b0f;hpb=effdef418747406b81e3b4545fa3e911d0931d2f;p=max%2Ftmk_keyboard.git

diff --git a/converter/pc98_usb/README b/converter/pc98_usb/README
index 6da54178..4d0d0bfe 100644
--- a/converter/pc98_usb/README
+++ b/converter/pc98_usb/README
@@ -42,7 +42,7 @@ Frame format: 1-Start bit(Lo), 8-Data bits, Odd-Parity, 1-Stop bit
 
 Build Firmware
 --------------
-Just use 'make' to bild firmware
+Just use 'make' to bild firmware for TMK PC98 converter.
 
     $ make clean
     $ make
@@ -53,6 +53,12 @@ To flash firmware
 
 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
@@ -141,6 +147,7 @@ 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
@@ -152,3 +159,25 @@ http://www.tsp.ne.jp/~sawada/mago/src/gka98at.asm
 
 scan code:
 http://ixsvr.dyndns.org/usb2pc98
+
+
+
+NOTES
+-----
+### Tested on
+- PC-9801V
+- DIGITAL WAVE Dboard
+
+
+### RDY
+Current firmware does not control RDY line and it is drived as low to receive data always. While sending command firmware drive the line high.
+
+PC98 host keeps RDY line high to prevent keyboard from sending data while processing.
+
+https://archive.org/stream/PC9800TechnicalDataBookHARDWARE1993/PC-9800TechnicalDataBook_HARDWARE1993#page/n359
+
+### Inhibit key repeating
+The command(9Ch, 70h) works with Raku Raku keybaord but not with Dboard.
+
+### LED indicater
+Dboard has LEDs but it seems to ignore LED control command.