M0110: Fixed timing of signal handling.
This commit is contained in:
tmk
parent
38d61ee1b1
commit
0a4fa89548
2 changed files with 87 additions and 26 deletions
94
m0110.c
94
m0110.c
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@ -66,7 +66,7 @@ Signaling
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---------
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CLOCK is always from KEYBOARD. DATA are sent with MSB first.
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1) IDLE: both line is high.
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1) IDLE: both lines are high.
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CLOCK ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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DATA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@ -79,7 +79,7 @@ CLOCK is always from KEYBOARD. DATA are sent with MSB first.
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3) HOST->KEYBOARD: HOST asserts bit on falling edge.
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CLOCK ~~~~~~~~~~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~~~~~~~~~
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DATA ~~~~~~|_____X777777X666666X555555X444444X333333X222222X111111X000000X~~~~~~~
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<----> 840us(request to send by host) <-> 80us(hold DATA)
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<----> 840us(request to send by host) <---> 80us(hold DATA)
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<--> 180us(clock low)
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<---> 220us(clock high)
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@ -98,11 +98,18 @@ COMMAND:
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KEY EVENT:
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bit 7 key state(0:press 1:release)
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bit 6-1 scan code
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bit 6-1 scan code(see below)
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bit 0 always 1
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To get scan code, use ((bits&(1<<7)) | ((bits&7F))>>1).
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To get scan code use this: ((bits&(1<<7)) | ((bits&0x7F))>>1).
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Note: On the M0110A, the numpad keys and the arrow keys are preceded by 0x79.
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Moreover, the numpad keys =, /, * and + are preceded by shift-down 0x71 on press and shift-up 0xF1 on release.
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So, the data transferred by nupmad 5 is "79 2F" whereas for numpad + it's "71 79 0D".
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SCAN CODE:
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m0111_recv_key() function returns follwing scan codes instead of raw key events.
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Scan codes are 1 byte long and bit7 is set when key is released.
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M0110
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,---------------------------------------------------------.
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| `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backs|
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@ -127,29 +134,74 @@ SCAN CODE:
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| 3A| 37| 31 | 34| 3A|
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`------------------------------------------------'
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M0110A
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,---------------------------------------------------------. ,---------------.
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| `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Bcksp| |Clr| =| /| *|
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|---------------------------------------------------------| |---------------|
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|Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| | | 7| 8| 9| -|
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|-----------------------------------------------------' | |---------------|
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|CapsLo| A| S| D| F| G| H| J| K| L| ;| '|Return| | 4| 5| 6| +|
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|---------------------------------------------------------| |---------------|
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|Shift | Z| X| C| V| B| N| M| ,| ,| /|Shft|Up | | 1| 2| 3| |
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|---------------------------------------------------------' |-----------|Ent|
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|Optio|Mac | Space | \|Lft|Rgt|Dn | | 0| .| |
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`---------------------------------------------------------' `---------------'
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,---------------------------------------------------------. ,---------------.
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| 32| 12| 13| 14| 15| 17| 16| 1A| 1C| 19| 1D| 1B| 18| 33| | 47| 68| 6D| 62|
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|---------------------------------------------------------| |---------------|
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| 30| 0C| 0D| 0E| 0F| 10| 11| 20| 22| 1F| 23| 21| 1E| | | 59| 5B| 5C| 4E|
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|-----------------------------------------------------' | |---------------|
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| 39| 00| 01| 02| 03| 05| 04| 26| 28| 25| 29| 27| 24| | 56| 57| 58| 66|
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|---------------------------------------------------------| |---------------|
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| 38| 06| 07| 08| 09| 0B| 2D| 2E| 2B| 2F| 2C| 38| 4D| | 53| 54| 55| |
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|---------------------------------------------------------' |-----------| 4C|
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| 3A| 37| 31 | 2A| 46| 42| 48| | 52| 41| |
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`---------------------------------------------------------' `---------------'
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References
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----------
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Technical Info for 128K/512K and Plus
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ftp://ftp.apple.asimov.net/pub/apple_II/documentation/macintosh/Mac%20Hardware%20Info%20-%20Mac%20128K.pdf
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ftp://ftp.apple.asimov.net/pub/apple_II/documentation/macintosh/Mac%20Hardware%20Info%20-%20Mac%20Plus.pdf
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Protocol:
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Page 20 of Tech Info for 128K/512K
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http://www.mac.linux-m68k.org/devel/plushw.php
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Connector:
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Page 20 of Tech Info for 128K/512K
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http://www.kbdbabel.org/conn/kbd_connector_macplus.png
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Signaling:
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http://www.kbdbabel.org/signaling/kbd_signaling_mac.png
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http://typematic.blog.shinobi.jp/Entry/14/
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Scan Codes:
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Page 22 of Tech Info for 128K/512K
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Page 07 of Tech Info for Plus
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http://m0115.web.fc2.com/m0110.jpg
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http://m0115.web.fc2.com/m0110a.jpg
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*/
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#define WAIT(stat, us, err) do { \
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#define WAIT_US(stat, us, err) do { \
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if (!wait_##stat(us)) { \
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m0110_error = err; \
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goto ERROR; \
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} \
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} while (0)
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#define WAIT_MS(stat, ms, err) do { \
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uint16_t _ms = ms; \
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while (_ms) { \
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if (wait_##stat(1000)) { \
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break; \
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} \
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_ms--; \
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} \
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if (_ms == 0) { \
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m0110_error = err; \
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goto ERROR; \
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} \
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} while (0)
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uint8_t m0110_error = 0;
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@ -158,9 +210,13 @@ void m0110_init(void)
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{
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uint8_t data;
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idle();
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_delay_ms(255);
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_delay_ms(1000);
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m0110_send(M0110_MODLE);
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// Model Number
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// M0110 : 0x09 00001001 : model number 4 (100)
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// M0110A: 0x0B 00001011 : model number 5 (101)
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// M0110 & M0120: ???
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m0110_send(M0110_MODEL);
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data = m0110_recv();
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print("m0110_init model: "); phex(data); print("\n");
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@ -174,24 +230,22 @@ uint8_t m0110_send(uint8_t data)
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m0110_error = 0;
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request();
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WAIT(clock_lo, 1000, 0);
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WAIT_MS(clock_lo, 250, 1); // keyboard may block long time
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for (uint8_t bit = 0x80; bit; bit >>= 1) {
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WAIT(clock_lo, 250, 3);
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_delay_us(15);
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WAIT_US(clock_lo, 250, 3);
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if (data&bit) {
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data_hi();
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} else {
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data_lo();
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}
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WAIT(clock_hi, 200, 4);
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WAIT_US(clock_hi, 200, 4);
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}
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_delay_us(100); // hold last bit for 80us
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idle();
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return 1;
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ERROR:
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if (m0110_error) {
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print("m0110_send err: "); phex(m0110_error); print("\n");
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}
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_delay_ms(500);
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idle();
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return 0;
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}
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@ -201,24 +255,20 @@ uint8_t m0110_recv(void)
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uint8_t data = 0;
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m0110_error = 0;
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WAIT(clock_lo, -1, 0); // need 250ms? insted 0xffff(16bit max)us
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WAIT_MS(clock_lo, 250, 1); // keyboard may block long time
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for (uint8_t i = 0; i < 8; i++) {
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data <<= 1;
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WAIT(clock_lo, 200, 2);
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WAIT(clock_hi, 200, 3);
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WAIT_US(clock_lo, 200, 2);
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WAIT_US(clock_hi, 200, 3);
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if (data_in()) {
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data |= 1;
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}
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}
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idle();
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if (data != M0110_NULL) {
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print("m0110_recv data: "); phex(data); print("\n");
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}
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return data;
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ERROR:
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if (m0110_error) {
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print("m0110_recv err: "); phex(m0110_error); print("\n");
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}
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_delay_ms(500);
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idle();
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return 0xFF;
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}
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@ -231,7 +281,7 @@ uint8_t m0110_recv_key(void)
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if (key == 0xFF || key == M0110_NULL)
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return M0110_NULL;
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else
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return ((key&(1<<7)) | ((key&0x7F)>>1));
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return M0110_RAW2SCAN(key);
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}
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15
m0110.h
15
m0110.h
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@ -55,11 +55,22 @@ POSSIBILITY OF SUCH DAMAGE.
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#endif
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#define M0110_INQUIRY 0x10
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#define M0110_INSTNAT 0x14
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#define M0110_MODLE 0x16
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#define M0110_INSTANT 0x14
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#define M0110_MODEL 0x16
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#define M0110_TEST 0x36
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#define M0110_PAD 0x79
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#define M0110_NULL 0x7B
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#define M0110_TEST_ACK 0x7D
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#define M0110_TEST_NAK 0x77
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/* scan code offset for keypad and arrow keys */
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#define M0110_KEYPAD_OFFSET 0x40
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#define M0110_ARROW_OFFSET 0x60
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/* convert key event raw response into scan code */
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#define M0110_RAW2SCAN(key) ((key&(1<<7)) | ((key&0x7F)>>1))
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extern uint8_t m0110_error;
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