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Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/common/keyboard.c')
| -rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/common/keyboard.c | 449 |
1 files changed, 0 insertions, 449 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/common/keyboard.c b/board/MAI/bios_emulator/scitech/src/pm/common/keyboard.c deleted file mode 100644 index 36867bdba7..0000000000 --- a/board/MAI/bios_emulator/scitech/src/pm/common/keyboard.c +++ /dev/null @@ -1,449 +0,0 @@ -/**************************************************************************** -* -* SciTech OS Portability Manager Library -* -* ======================================================================== -* -* The contents of this file are subject to the SciTech MGL Public -* License Version 1.0 (the "License"); you may not use this file -* except in compliance with the License. You may obtain a copy of -* the License at http://www.scitechsoft.com/mgl-license.txt -* -* Software distributed under the License is distributed on an -* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or -* implied. See the License for the specific language governing -* rights and limitations under the License. -* -* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc. -* -* The Initial Developer of the Original Code is SciTech Software, Inc. -* All Rights Reserved. -* -* ======================================================================== -* -* Language: ANSI C -* Environment: Any -* -* Description: Direct keyboard event handling module. This module contains -* code to process raw scan code information, convert it to -* virtual scan codes and do code page translation to ASCII -* for different international keyboard layouts. -* -****************************************************************************/ - -/*---------------------------- Implementation -----------------------------*/ - -/**************************************************************************** -PARAMETERS: -scanCode - Keyboard scan code to translate -table - Code page table to search -count - Number of entries in the code page table - -REMARKS: -This function translates the scan codes from keyboard scan codes to ASCII -codes using a binary search on the code page table. -****************************************************************************/ -static uchar translateScan( - uchar scanCode, - codepage_entry_t *table, - int count) -{ - codepage_entry_t *test; - int n,pivot,val; - - for (n = count; n > 0; ) { - pivot = n >> 1; - test = table + pivot; - val = scanCode - test->scanCode; - if (val < 0) - n = pivot; - else if (val == 0) - return test->asciiCode; - else { - table = test + 1; - n -= pivot + 1; - } - } - return 0; -} - -/**************************************************************************** -REMARKS: -This macro/function is used to converts the scan codes reported by the -keyboard to our event libraries normalised format. We only have one scan -code for the 'A' key, and use shift modifiers to determine if it is a -Ctrl-F1, Alt-F1 etc. The raw scan codes from the keyboard work this way, -but the OS gives us 'cooked' scan codes, we have to translate them back -to the raw format. -{secret} -****************************************************************************/ -void _EVT_maskKeyCode( - event_t *evt) -{ - int ascii,scan = EVT_scanCode(evt->message); - - evt->message &= ~0xFF; - if (evt->modifiers & EVT_NUMLOCK) { - if ((ascii = translateScan(scan,EVT.codePage->numPad,EVT.codePage->numPadLen)) != 0) { - evt->message |= ascii; - return; - } - } - if (evt->modifiers & EVT_CTRLSTATE) { - evt->message |= translateScan(scan,EVT.codePage->ctrl,EVT.codePage->ctrlLen); - return; - } - if (evt->modifiers & EVT_CAPSLOCK) { - if (evt->modifiers & EVT_SHIFTKEY) { - if ((ascii = translateScan(scan,EVT.codePage->shiftCaps,EVT.codePage->shiftCapsLen)) != 0) { - evt->message |= ascii; - return; - } - } - else { - if ((ascii = translateScan(scan,EVT.codePage->caps,EVT.codePage->capsLen)) != 0) { - evt->message |= ascii; - return; - } - } - } - if (evt->modifiers & EVT_SHIFTKEY) { - if ((ascii = translateScan(scan,EVT.codePage->shift,EVT.codePage->shiftLen)) != 0) { - evt->message |= ascii; - return; - } - } - evt->message |= translateScan(scan,EVT.codePage->normal,EVT.codePage->normalLen); -} - -/**************************************************************************** -REMARKS: -Returns true if the key with the specified scan code is being held down. -****************************************************************************/ -static ibool _EVT_isKeyDown( - uchar scanCode) -{ - if (scanCode > 0x7F) - return false; - else - return EVT.keyTable[scanCode] != 0; -} - -/**************************************************************************** -PARAMETERS: -what - Event code -message - Event message (ASCII code and scan code) - -REMARKS: -Adds a new keyboard event to the event queue. This routine is called from -within the keyboard interrupt subroutine! - -NOTE: Interrupts are OFF when this routine is called by the keyboard ISR, - and we leave them OFF the entire time. -****************************************************************************/ -static void addKeyEvent( - uint what, - uint message) -{ - event_t evt; - - if (EVT.count < EVENTQSIZE) { - /* Save information in event record */ - evt.when = _EVT_getTicks(); - evt.what = what; - evt.message = message | 0x10000UL; - evt.where_x = 0; - evt.where_y = 0; - evt.relative_x = 0; - evt.relative_y = 0; - evt.modifiers = EVT.keyModifiers; - if (evt.what == EVT_KEYREPEAT) { - if (EVT.oldKey != -1) - EVT.evtq[EVT.oldKey].message += 0x10000UL; - else { - EVT.oldKey = EVT.freeHead; - addEvent(&evt); /* Add to tail of event queue */ - } - } - else { -#ifdef __QNX__ - _EVT_maskKeyCode(&evt); -#endif - addEvent(&evt); /* Add to tail of event queue */ - } - EVT.oldMove = -1; - } -} - -/**************************************************************************** -REMARKS: -This function waits for the keyboard controller to set the ready-for-write -bit. -****************************************************************************/ -static int kbWaitForWriteReady(void) -{ - int timeout = 8192; - while ((timeout > 0) && (PM_inpb(0x64) & 0x02)) - timeout--; - return (timeout > 0); -} - -/**************************************************************************** -REMARKS: -This function waits for the keyboard controller to set the ready-for-read -bit. -****************************************************************************/ -static int kbWaitForReadReady(void) -{ - int timeout = 8192; - while ((timeout > 0) && (!(PM_inpb(0x64) & 0x01))) - timeout--; - return (timeout > 0); -} - -/**************************************************************************** -PARAMETERS: -data - Data to send to the keyboard - -REMARKS: -This function sends a data byte to the keyboard controller. -****************************************************************************/ -static int kbSendData( - uchar data) -{ - int resends = 4; - int timeout, temp; - - do { - if (!kbWaitForWriteReady()) - return 0; - PM_outpb(0x60,data); - timeout = 8192; - while (--timeout > 0) { - if (!kbWaitForReadReady()) - return 0; - temp = PM_inpb(0x60); - if (temp == 0xFA) - return 1; - if (temp == 0xFE) - break; - } - } while ((resends-- > 0) && (timeout > 0)); - return 0; -} - -/**************************************************************************** -PARAMETERS: -modifiers - Keyboard modifier flags - -REMARKS: -This function re-programs the LED's on the keyboard to the values stored -in the passed in modifier flags. If the 'allowLEDS' flag is false, this -function does nothing. -****************************************************************************/ -static void setLEDS( - uint modifiers) -{ - if (EVT.allowLEDS) { - if (!kbSendData(0xED) || !kbSendData((modifiers>>9) & 7)) { - kbSendData(0xF4); - } - } -} - -/**************************************************************************** -REMARKS: -Function to process raw scan codes read from the keyboard controller. - -NOTE: Interrupts are OFF when this routine is called by the keyboard ISR, - and we leave them OFF the entire time. -{secret} -****************************************************************************/ -void processRawScanCode( - int scan) -{ - static int pauseLoop = 0; - static int extended = 0; - int what; - - if (pauseLoop) { - /* Skip scan codes until the pause key sequence has been read */ - pauseLoop--; - } - else if (scan == 0xE0) { - /* This signals the start of an extended scan code sequence */ - extended = 1; - } - else if (scan == 0xE1) { - /* The Pause key sends a strange scan code sequence, which is: - * - * E1 1D 52 E1 9D D2 - * - * However there is never any release code nor any auto-repeat for - * this key. For this reason we simply ignore the key and skip the - * next 5 scan codes read from the keyboard. - */ - pauseLoop = 5; - } - else { - /* Process the scan code normally (it may be an extended code - * however!). Bit 7 means key was released, and bits 0-6 are the - * scan code. - */ - what = (scan & 0x80) ? EVT_KEYUP : EVT_KEYDOWN; - scan &= 0x7F; - if (extended) { - extended = 0; - if (scan == 0x2A || scan == 0x36) { - /* Ignore these extended scan code sequences. These are - * used by the keyboard controller to wrap around certain - * key sequences for the keypad (and when NUMLOCK is down - * internally). - */ - return; - } - - /* Convert extended codes for key sequences that we map to - * virtual scan codes so the user can detect them in their - * code. - */ - switch (scan) { - case KB_leftCtrl: scan = KB_rightCtrl; break; - case KB_leftAlt: scan = KB_rightAlt; break; - case KB_divide: scan = KB_padDivide; break; - case KB_enter: scan = KB_padEnter; break; - case KB_padTimes: scan = KB_sysReq; break; - } - } - else { - /* Convert regular scan codes for key sequences that we map to - * virtual scan codes so the user can detect them in their - * code. - */ - switch (scan) { - case KB_left: scan = KB_padLeft; break; - case KB_right: scan = KB_padRight; break; - case KB_up: scan = KB_padUp; break; - case KB_down: scan = KB_padDown; break; - case KB_insert: scan = KB_padInsert; break; - case KB_delete: scan = KB_padDelete; break; - case KB_home: scan = KB_padHome; break; - case KB_end: scan = KB_padEnd; break; - case KB_pageUp: scan = KB_padPageUp; break; - case KB_pageDown: scan = KB_padPageDown; break; - } - } - - /* Determine if the key is an UP, DOWN or REPEAT and maintain the - * up/down status of all keys in our global key array. - */ - if (what == EVT_KEYDOWN) { - if (EVT.keyTable[scan]) - what = EVT_KEYREPEAT; - else - EVT.keyTable[scan] = scan; - } - else { - EVT.keyTable[scan] = 0; - } - - /* Handle shift key modifiers */ - if (what != EVT_KEYREPEAT) { - switch (scan) { - case KB_capsLock: - if (what == EVT_KEYDOWN) - EVT.keyModifiers ^= EVT_CAPSLOCK; - setLEDS(EVT.keyModifiers); - break; - case KB_numLock: - if (what == EVT_KEYDOWN) - EVT.keyModifiers ^= EVT_NUMLOCK; - setLEDS(EVT.keyModifiers); - break; - case KB_scrollLock: - if (what == EVT_KEYDOWN) - EVT.keyModifiers ^= EVT_SCROLLLOCK; - setLEDS(EVT.keyModifiers); - break; - case KB_leftShift: - if (what == EVT_KEYUP) - EVT.keyModifiers &= ~EVT_LEFTSHIFT; - else - EVT.keyModifiers |= EVT_LEFTSHIFT; - break; - case KB_rightShift: - if (what == EVT_KEYUP) - EVT.keyModifiers &= ~EVT_RIGHTSHIFT; - else - EVT.keyModifiers |= EVT_RIGHTSHIFT; - break; - case KB_leftCtrl: - if (what == EVT_KEYUP) - EVT.keyModifiers &= ~EVT_LEFTCTRL; - else - EVT.keyModifiers |= EVT_LEFTCTRL; - break; - case KB_rightCtrl: - if (what == EVT_KEYUP) - EVT.keyModifiers &= ~EVT_RIGHTCTRL; - else - EVT.keyModifiers |= EVT_RIGHTCTRL; - break; - case KB_leftAlt: - if (what == EVT_KEYUP) - EVT.keyModifiers &= ~EVT_LEFTALT; - else - EVT.keyModifiers |= EVT_LEFTALT; - break; - case KB_rightAlt: - if (what == EVT_KEYUP) - EVT.keyModifiers &= ~EVT_RIGHTALT; - else - EVT.keyModifiers |= EVT_RIGHTALT; - break; -#ifdef SUPPORT_CTRL_ALT_DEL - case KB_delete: - if ((EVT.keyModifiers & EVT_CTRLSTATE) && (EVT.keyModifiers & EVT_ALTSTATE)) - Reboot(); - break; -#endif - } - } - - /* Add the untranslated key code to the event queue. All - * translation to ASCII from the key codes occurs when the key - * is extracted from the queue, saving time in the low level - * interrupt handler. - */ - addKeyEvent(what,scan << 8); - } -} - -/**************************************************************************** -DESCRIPTION: -Enables/disables the update of the keyboard LED status indicators. - -HEADER: -event.h - -PARAMETERS: -enable - True to enable, false to disable - -REMARKS: -Enables the update of the keyboard LED status indicators. Sometimes it may -be convenient in the application to turn off the updating of the LED -status indicators (such as if a game is using the CAPSLOCK key for some -function). Passing in a value of FALSE to this function will turn off all -the LEDS, and stop updating them when the internal status changes (note -however that internally we still keep track of the toggle key status!). -****************************************************************************/ -void EVTAPI EVT_allowLEDS( - ibool enable) -{ - EVT.allowLEDS = true; - if (enable) - setLEDS(EVT.keyModifiers); - else - setLEDS(0); - EVT.allowLEDS = enable; -} |
