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Diffstat (limited to 'atari/nkcc.s')
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diff --git a/atari/nkcc.s b/atari/nkcc.s new file mode 100755 index 000000000..56a913160 --- /dev/null +++ b/atari/nkcc.s @@ -0,0 +1,1067 @@ +|* +|* $Id: nkcc-gc.S,v 1.2 2011/05/16 08:43:20 alanh Exp $ +|* +|* XaAES - XaAES Ain't the AES (c) 1992 - 1998 C.Graham +|* 1999 - 2003 H.Robbers +|* 2004 F.Naumann & O.Skancke +|* +|* A multitasking AES replacement for FreeMiNT +|* +|* This file is part of XaAES. +|* +|* XaAES is free software; you can redistribute it and/or modify +|* it under the terms of the GNU General Public License as published by +|* the Free Software Foundation; either version 2 of the License, or +|* (at your option) any later version. +|* +|* XaAES is distributed in the hope that it will be useful, +|* but WITHOUT ANY WARRANTY; without even the implied warranty of +|* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +|* GNU General Public License for more details. +|* +|* You should have received a copy of the GNU General Public License +|* along with XaAES; if not, write to the Free Software +|* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +|* +|*************************************************************************** +| +| reduced NKCC for the CF-Lib +| GNU-C compatible version +| +|*************************************************************************** + +|*************************************************************************** +| ASSEMBLER CONTROL SECTION +|*************************************************************************** + +VERSION = 0x0294 | NKCC's version + +NKFf_FUNC = 0x8000 +NKFf_RESVD = 0x4000 +NKFf_NUM = 0x2000 +NKFf_CAPS = 0x1000 +NKFf_ALT = 0x0800 +NKFf_CTRL = 0x0400 +NKFf_SHIFT = 0x0300 | both shift keys + +NKFb_FUNC = 15 | function +NKFb_RESVD = 14 | reserved, ignore it! +NKFb_NUM = 13 | numeric pad +NKFb_CAPS = 12 | CapsLock +NKFb_ALT = 11 | Alternate +NKFb_CTRL = 10 | Control +NKFb_LSH = 9 | left Shift key +NKFb_RSH = 8 | right Shift key + +NK_UP = 0x01 | cursor up +NK_DOWN = 0x02 | cursor down +NK_RIGHT = 0x03 | cursor right +NK_LEFT = 0x04 | cursor left +NK_M_PGUP = 0x05 | Mac: page up +NK_M_PGDOWN = 0x06 | Mac: page down +NK_M_END = 0x07 | Mac: end +NK_INS = 0x0b | Insert +NK_CLRHOME = 0x0c | Clr/Home +NK_HELP = 0x0e | Help +NK_UNDO = 0x0f | Undo +NK_M_F11 = 0x1a | Mac: function key #11 +NK_M_F12 = 0x1c | Mac: function key #12 +NK_M_F14 = 0x1d | Mac: function key #14 +NK_ENTER = 0x0a | Enter +NK_DEL = 0x1f | Delete + +|*************************************************************************** +| EXPORT +|*************************************************************************** + + .globl _nkc_init | init NKCC + .globl _nkc_tos2n | TOS key code converter + .globl _nkc_n2tos | NKC to TOS key code converter + .globl _nkc_toupper | convert character to upper case + .globl _nkc_tolower | convert character to lower case + +|*************************************************************************** +| LOCAL TEXT SECTION +|*************************************************************************** + +|*************************************************************************** +| +| nk_findscan: find scan code +| +|*************************************************************************** + +nk_findscan: + btst #NKFb_NUM,d0 | on numeric keypad? + beqs search | no -> + + moveql #0x4a,d1 | yes: try all numeric keypad +#ifdef __mcoldfire__ + cmpb a0@(d1:l),d0 | scan codes first +#else + cmpb a0@(d1:w),d0 | scan codes first +#endif + beqs found1 | it matches -> + + moveql #0x4e,d1 +#ifdef __mcoldfire__ + cmpb a0@(d1:l),d0 +#else + cmpb a0@(d1:w),d0 +#endif + beqs found1 + + moveql #0x63,d1 | block starts at 0x63 + +numsearch: +#ifdef __mcoldfire__ + cmpb a0@(d1:l),d0 | match? +#else + cmpb a0@(d1:w),d0 | match? +#endif + beqs found1 | yes -> + +#ifdef __mcoldfire__ + addql #1,d1 | next scan code +#else + addqw #1,d1 | next scan code +#endif + cmpw #0x73,d1 | block end at 0x72 + bcss numsearch | continue search -> + +search: + moveql #1,d1 | start with first valid scan code + +mainsearch: +#ifdef __mcoldfire__ + cmpb a0@(d1:l),d0 | match? +#else + cmpb a0@(d1:w),d0 | match? +#endif + beqs found1 | yes -> + +#ifdef __mcoldfire__ + addql #1,d1 | next scan code +#else + addqb #1,d1 | next scan code +#endif + cmpb #0x78,d1 | 0x78 = last valid scan code + bcss mainsearch | continue search -> + + moveql #0,d1 | not found + rts + +found1: + tstw d1 | found set CCR + rts + +|*************************************************************************** +| GLOBAL TEXT SECTION +|*************************************************************************** + +|*************************************************************************** +| +| nkc_init: initialize NKCC +| +|*************************************************************************** + +_nkc_init: +|------------- fetch addresses of TOS' key scan code translation tables + + moveql #-1,d0 | the function is also used to + movel d0,sp@- | change the addresses| values + movel d0,sp@- | of -1 as new addresses tell + movel d0,sp@- | XBIOS not to change them + movew #0x10,sp@- | Keytbl + trap #14 | XBIOS + lea sp@(0xe),sp | clean stack + + movel d0,a0 | ^key table structure + movel a0@+,pkey_unshift | get ^unshifted table + movel a0@+,pkey_shift | get ^shifted table + movel a0@,pkey_caps | get ^CapsLock table + +exit1: + movew #VERSION,d0 | load version # + rts | bye + +|*************************************************************************** +| +| nkc_tconv: TOS key code converter +| +|*************************************************************************** + +_nkc_tos2n: + movel sp@(4), d0 | Parameter via Stack! +#ifdef __mcoldfire__ + lea sp@(-12),sp + movem.l d2-d4,sp@ | store registers +#else + movem.l d2-d4,sp@- | store registers +#endif + +|------------- separate TOS key code + + movel d0,d1 | TOS key code + swap d1 | .W = scan code and flags + movew d1,d2 | copy +#ifdef __mcoldfire__ + movel #0xff,d3 | and-mask + andl d3,d0 | .B = ASCII code + andl d3,d1 | .B = scan code +#else + movew #0xff,d3 | and-mask + andw d3,d0 | .B = ASCII code + andw d3,d1 | .B = scan code +#endif + beq tos306 | scancode=zero (key code created + | by ASCII input of TOS 3.06)? -> +#ifdef __mcoldfire__ + andl #0x1f00,d2 | .W = key flags (in high byte) +#else + andw #0x1f00,d2 | .W = key flags (in high byte) +#endif + +|------------- decide which translation table to use + + movew d2,d3 | key flags +#ifdef __mcoldfire__ + andl #NKFf_SHIFT,d3 | isolate bits for shift keys +#else + andw #NKFf_SHIFT,d3 | isolate bits for shift keys +#endif + beqs ktab11 | shift key pressed? no-> + + movel pkey_shift,a0 | yes: use shift table + bras ktab13 | -> + +ktab11: + btst #NKFb_CAPS,d2 | CapsLock? + beqs ktab12 | no-> + + movel pkey_caps,a0 | yes: use CapsLock table + bras ktab13 | -> + +ktab12: + movel pkey_unshift,a0 | use unshifted table + +|------------- check if scan code is out of range +| +| Illegal scancodes can be used to produce 'macro key codes'. Their format is: +| +| - the scancode must be 0x84 or larger (should be 0xff to work properly with old +| versions of Mag!x) +| - the ASCII code must be in the range 0x20...0xff (values below are set to 0x20 +| by NKCC) +| - Alternate and Control are not used for the normalized key code. However, +| if at least one of them is non-zero, then the numeric keypad flag will be +| set in the resulting key code. +| + +ktab13: + cmpb #0x84,d1 | illegal scan code? + bcss ktab14 | no -> + + movew d2,d1 | flags +| andw #NKFf_ALT|NKFf_CTRL,d1 | Alternate or Control? +#ifdef __mcoldfire__ + andl #0xc00,d1 | Alternate or Control? +#else + andw #0xc00,d1 | Alternate or Control? +#endif + beqs special | no -> + +#ifdef __mcoldfire__ + orl #NKFf_NUM,d0 | yes: set numeric keypad flag +#else + orw #NKFf_NUM,d0 | yes: set numeric keypad flag +#endif +| and #NKFf_CAPS|NKFf_SHIFT,d2 | mask off both flags +#ifdef __mcoldfire__ + andl #0x1300,d2 | mask off both flags +#else + andw #0x1300,d2 | mask off both flags +#endif + +special: +#ifdef __mcoldfire__ + orl d2,d0 | combine with ASCII code +#else + orw d2,d0 | combine with ASCII code +#endif +| orw #NKFf_FUNC|NKFf_RESVD,d0 | set function and resvd +#ifdef __mcoldfire__ + orl #0x1300,d0 | set function and resvd +#else + orw #0x1300,d0 | set function and resvd +#endif + cmpb #0x20,d0 | ASCII code in range? + bcc exit2 | yes -> + + moveb #0x20,d0 | no: use minimum + bra exit2 | -> + +|------------- check if Alternate + number: they have simulated scan codes + +ktab14: + cmpb #0x78,d1 | scan code of Alt + number? + bcss scan1 | no-> + +#ifdef __mcoldfire__ + subl #0x76,d1 | yes: calculate REAL scan code + moveb a0@(d1:l),d0 | fetch ASCII code + orl #NKFf_ALT,d2 | set Alternate flag +#else + subb #0x76,d1 | yes: calculate REAL scan code + moveb a0@(d1:w),d0 | fetch ASCII code + orw #NKFf_ALT,d2 | set Alternate flag +#endif + bra cat_codes | -> add flag byte and exit + +|------------- check if exception scan code from cursor keypad + +scan1: + lea xscantab,a1 | ^exception scan code table + +search_scan: + movew a1@+,d3 | NKC and scan code + bmis tabend | <0? end of table reached -> + + cmpb d1,d3 | scan code found? + bnes search_scan | no: continue search -> + +#ifdef __mcoldfire__ + lsrl #8,d3 | .B = NKC +#else + lsrw #8,d3 | .B = NKC +#endif + moveql #0,d0 | mark: key code found + bras scan2 | -> + +tabend: + moveql #0,d3 | no NKC found yet + +|------------- check if rubbish ASCII code and erase it, if so + +scan2: +#ifdef __mcoldfire__ + moveb a0@(d1:l),d4 | ASCII code from translation table +#else + moveb a0@(d1:w),d4 | ASCII code from translation table +#endif + cmpb #32,d0 | ASCII returned by TOS < 32? + bccs scan3 | no -> can't be rubbish + + cmpb d4,d0 | yes: compare with table entry + beqs scan3 | equal: that's ok -> + + moveql #0,d0 | not equal: rubbish! clear it + +|------------- check if ASCII code could only be produced via Alternate key +| combination + +scan3: + tstb d0 | ASCII code valid? + beqs scan4 | no -> + + cmpb d4,d0 | compare with table entry + beqs scan4 | equal: normal key -> + +| and #!NKFf_ALT,d2 | no: clear Alternate flag +#ifdef __mcoldfire__ + andl #0xF7FF,d2 | no: clear Alternate flag +#else + andw #0xF7FF,d2 | no: clear Alternate flag +#endif + +|------------- check if ASCII code found yet, and set it, if not + +scan4: + tstb d0 | found? + bnes scan5 | yes -> + + moveb d3,d0 | no: use code from exception table + bnes scan5 | now valid? yes -> + + moveb d4,d0 | no: use code from transl. table + +|------------- check special case: delete key + +scan5: + cmpb #127,d0 | ASCII code of Delete? + bnes scan6 | no -> + + moveb #NK_DEL,d0 | yes: set according NKC + +|------------- check if key is on numeric keypad (via scan code) + +scan6: + cmpb #0x4a,d1 | numeric pad scan code range? + beqs numeric | yes -> + + cmpb #0x4e,d1 + beqs numeric | yes -> + + cmpb #0x63,d1 + bcss scan7 | no -> + + cmpb #0x72,d1 + bhis scan7 | no -> + +numeric: +#ifdef __mcoldfire__ + orl #NKFf_NUM,d2 | yes: set numeric bit +#else + orw #NKFf_NUM,d2 | yes: set numeric bit +#endif + +|------------- check if "function key" and set bit accordingly + +scan7: + cmpb #32,d0 | ASCII code less than 32? + bccs scan8 | no -> + +#ifdef __mcoldfire__ + orl #NKFf_FUNC,d2 | yes: set function bit +#else + orw #NKFf_FUNC,d2 | yes: set function bit +#endif + +|------------- check special case: Return or Enter key + + cmpb #13,d0 | Return or Enter key? + bnes scan8 | no -> + + btst #NKFb_NUM,d2 | yes: from the numeric pad? + beqs scan8 | no -> it's Return, keep code + + moveql #NK_ENTER,d0 | yes: it's Enter| new code + +|------------- check if function key (F1-F10) via scan code + +scan8: + cmpb #0x54,d1 | shift + function key? + bcss scan9 | no -> + + cmpb #0x5d,d1 + bhis scan9 | no -> + +#ifdef __mcoldfire__ + subl #0x54-0x3b,d1 | yes: scan code for unshifted key +#else + subb #0x54-0x3b,d1 | yes: scan code for unshifted key +#endif + movew d2,d3 | shift flags +#ifdef __mcoldfire__ + andl #NKFf_SHIFT,d3 | any shift key flag set? +#else + andw #NKFf_SHIFT,d3 | any shift key flag set? +#endif + bnes scan9 | yes -> +#ifdef __mcoldfire__ + orl #NKFf_SHIFT,d2 | no: set both flags +#else + orw #NKFf_SHIFT,d2 | no: set both flags +#endif + +scan9: + cmpb #0x3b,d1 | (unshifted) function key? + bcss cat_codes | no -> + + cmpb #0x44,d1 + bhis cat_codes | no -> + + moveb d1,d0 | yes: calc NKC +#ifdef __mcoldfire__ + subl #0x2b,d0 +#else + subb #0x2b,d0 +#endif + +|------------- final flag handling| mix key code (low byte) and flag byte + +cat_codes: + movel pkey_shift,a0 | ^shifted table +#ifdef __mcoldfire__ + moveb a0@(d1:l),d3 | get shifted ASCII code + orl d2,d0 | mix flags with key code + tst.w d0 +#else + moveb a0@(d1:w),d3 | get shifted ASCII code + orw d2,d0 | mix flags with key code +#endif + bmis scan10 | result is "function key"? -> + +#ifdef __mcoldfire__ + andl #NKFf_CTRL+NKFf_ALT,d2 | Control or Alternate pressed? +#else + andw #NKFf_CTRL+NKFf_ALT,d2 | Control or Alternate pressed? +#endif + bnes scan11 | yes -> + +scan10: + movel pkey_unshift,a0 | ^unshifted table +#ifdef __mcoldfire__ + cmpb a0@(d1:l),d3 | shifted ASCII = unshifted ASCII? +#else + cmpb a0@(d1:w),d3 | shifted ASCII = unshifted ASCII? +#endif + beqs scan12 | yes -> + + bras exit2 | no -> + +scan11: +#ifdef __mcoldfire__ + orl #NKFf_FUNC,d0 | Alt/Ctrl + char: set function bit +#else + orw #NKFf_FUNC,d0 | Alt/Ctrl + char: set function bit +#endif + movel pkey_caps,a0 | ^CapsLock table +#ifdef __mcoldfire__ + cmpb a0@(d1:l),d3 | shifted ASCII = CapsLocked ASCII? +#else + cmpb a0@(d1:w),d3 | shifted ASCII = CapsLocked ASCII? +#endif + bnes exit2 | no -> + + moveb d3,d0 | yes: use shifted ASCII code + +scan12: +#ifdef __mcoldfire__ + orl #NKFf_RESVD,d0 | yes: nkc_cmp() has to check +#else + orw #NKFf_RESVD,d0 | yes: nkc_cmp() has to check +#endif + +|------------- restore registers and exit + +exit2: + tstw d0 | set CCR +#ifdef __mcoldfire__ + movem.l sp@,d2-d4 | restore registers + lea sp@(12),sp +#else + movem.l sp@+,d2-d4 | restore registers +#endif + rts | bye + +|------------- special handling for key codes created by TOS' 3.06 ASCII input + +tos306: +#ifdef __mcoldfire__ + andl #NKFf_CAPS,d2 | isolate CapsLock flag + orl d2,d0 | merge with ASCII code + movem.l sp@,d2-d4 | restore registers + lea sp@(12),sp +#else + andw #NKFf_CAPS,d2 | isolate CapsLock flag + orw d2,d0 | merge with ASCII code + movem.l sp@+,d2-d4 | restore registers +#endif + rts | bye + +|*************************************************************************** +| +| nkc_n2tos: convert normalized key codes back to TOS format +| +|*************************************************************************** + +_nkc_n2tos: + movel sp@(4),d0 | Parameter ber Stack! + + movew d0,d1 | normalized key code +| and #NKFf_FUNC|NKFf_ALT|NKFf_CTRL,d1| isolate flags +#ifdef __mcoldfire__ + andl #0x8c00,d1 | isolate flags +#else + andw #0x8c00,d1 | isolate flags +#endif + cmpw #NKFf_FUNC,d1 | only function flag set? + bnes ktab20 | no -> + + cmpb #0x20,d0 | ASCII code >= 0x20? + bcss ktab20 | no -> + +|------------- macro key + + movew d0,d1 | keep normalized key code +| andl #NKFf_CAPS|NKFf_SHIFT,d0 | isolate usable flags + andl #0x1300,d0 | mask off both flags + btst #NKFb_NUM,d1 | numeric keypad flag set? + beqs mackey | no -> + +| or #NKFf_ALT|NKFf_CTRL,d0 | yes: set Alternate + Control +#ifdef __mcoldfire__ + orl #0xc00,d1 | yes: set Alternate + Control? +#else + orw #0xc00,d1 | yes: set Alternate + Control? +#endif + +mackey: +#ifdef __mcoldfire__ + orl #0xff,d0 | scan code always 0xff +#else + orb #0xff,d0 | scan code always 0xff +#endif + swap d0 | flags and scan code in upper word + moveb d1,d0 | ASCII code + bra exit3 | -> + +|------------- select system key table to use + +ktab20: + movew d0,d1 | normalized key code +#ifdef __mcoldfire__ + andl #NKFf_SHIFT,d1 | isolate bits for shift keys +#else + andw #NKFf_SHIFT,d1 | isolate bits for shift keys +#endif + beqs ktab21 | shift key pressed? no-> + + lea n_to_scan_s,a1 | ^default translation table + movel pkey_shift,a0 | yes: use shift table + bras ktab23 | -> + +ktab21: + lea n_to_scan_u,a1 | ^unshifted translation table + btst #NKFb_CAPS,d0 | CapsLock? + beqs ktab22 | no-> + + movel pkey_caps,a0 | yes: use CapsLock table + bras ktab23 | -> + +ktab22: + movel pkey_unshift,a0 | use unshifted table + +|------------- handling for ASCII codes >= 32 + +ktab23: + cmpb #32,d0 | ASCII code < 32? + bcss lowascii | yes -> + + bsr nk_findscan | find scan code + bnes found2 | found -> + + btst #NKFb_FUNC,d0 | function flag set? + beqs notfound | no -> + + movel a0,d1 | save a0 + lea tolower,a0 | ^upper->lower case table + moveql #0,d2 | clear for word operation + moveb d0,d2 | ASCII code +#ifdef __mcoldfire__ + moveb a0@(d2:l),d0 | get lowercased ASCII code +#else + moveb a0@(d2:w),d0 | get lowercased ASCII code +#endif + movel d1,a0 | restore a0 + bsr nk_findscan | try to find scan code again + bnes found2 | found -> + +|------------- unknown source: treat key code as it was entered using the +| TOS 3.06 direct ASCII input + +notfound: + moveql #0,d1 | not found: clear for word op. + moveb d0,d1 | unchanged ASCII code +#ifdef __mcoldfire__ + andl #0x1f00,d0 | keep shift flags only +#else + andw #0x1f00,d0 | keep shift flags only +#endif + swap d0 | -> high word (scan code = 0) + movew d1,d0 | low word: ASCII code + bra exit3 | -> + +|------------- handling for ASCII codes < 32 + +lowascii: + btst #NKFb_FUNC,d0 | function key? + bnes func | yes -> + +#ifdef __mcoldfire__ + andl #0xffff10ff,d0 | clear all flags except CapsLock +#else + andw #0x10ff,d0 | clear all flags except CapsLock +#endif + bras notfound | -> + +func: + moveql #0,d1 | clear for word operation + moveb d0,d1 | ASCII code (0...0x1f) + movew d1,d2 | copy +#ifdef __mcoldfire__ + moveb a1@(d1:l),d1 | get scan code +#else + moveb a1@(d1:w),d1 | get scan code +#endif + bnes getascii | valid? -> + + moveq #0,d0 | invalid key code!! return 0 + bra exit3 | -> + +getascii: + lea n_to_scan_u,a1 | ^unshifted translation table +#ifdef __mcoldfire__ + moveb a1@(d2:l),d2 | get scan code from unshifted tab. + moveb a0@(d2:l),d0 | get ASCII from system's table +#else + moveb a1@(d2:w),d2 | get scan code from unshifted tab. + moveb a0@(d2:w),d0 | get ASCII from system's table +#endif + +| register contents: +| +| d0.b ASCII code +| d1.b scan code +| d0.hb NKCC flags +| + +found2: + movew d0,d2 | flags and ASCII code +#ifdef __mcoldfire__ + andl #0x1f00,d0 | isolate shift flags +#else + andw #0x1f00,d0 | isolate shift flags +#endif + moveb d1,d0 | merge with scan code + swap d0 | -> high byte + clrw d0 | erase low word + moveb d2,d0 | restore ASCII code + +|------------- handling for Control key flag + + btst #NKFb_CTRL,d2 | control key flag set? + beqs alternate | no -> + + cmpb #0x4b,d1 | scan code = "cursor left"? + bnes scanchk2 | no -> + + addl #0x280000,d0 | change scan code to 0x73 + clrb d0 | erase ASCII code + bras exit3 | -> + +scanchk2: + cmpb #0x4d,d1 | scan code = "cursor right"? + bnes scanchk3 | no -> + + addl #0x270000,d0 | change scan code to 0x74 + clrb d0 | erase ASCII code + bras exit3 | -> + +scanchk3: + cmpb #0x47,d1 | scan code = "ClrHome"? + bnes ascchk | no -> + + addl #0x300000,d0 | change scan code to 0x77 +| keep ASCII code in this case! What a mess... + bras exit3 | -> + +ascchk: + lea asc_trans,a0 | ^ASCII translation table + +ascloop: + movew a0@+,d1 | get next entry + beqs noctrlasc | end of table -> + + cmpb d0,d1 | ASCII code found? + bnes ascloop | no -> continue search + +#ifdef __mcoldfire__ + lsrl #8,d1 | yes: get translated code +#else + lsrw #8,d1 | yes: get translated code +#endif + moveb d1,d0 | use it + bras exit3 | -> + +noctrlasc: +#ifdef __mcoldfire__ + andl #0x1f,d0 | mask off upper 3 bits +#else + andb #0x1f,d0 | mask off upper 3 bits +#endif + bras exit3 | -> + +|------------- handling for Alternate key flag + +alternate: + btst #NKFb_ALT,d2 | alternate key flag set? + beqs exit3 | no -> + + cmpb #2,d1 | top row on main keyboard? + bcss alphachk | no -> + + cmpb #0xd,d1 + bhis alphachk | no -> + + addl #0x760000,d0 | yes: change scan code + clrb d0 | and erase ASCII code + bras exit3 | -> + +alphachk: + cmpb #65,d0 | alpha-characters? + bcss exit3 | no -> + + cmpb #122,d0 + bhis exit3 | no -> + + cmpb #90,d0 + blss ascii0 | yes -> + + cmpb #97,d0 + bcss exit3 | no -> + +ascii0: + clrb d0 | alpha-character: clear ASCII code + +exit3: + tstw d0 | set CCR + rts | bye + + +|*************************************************************************** +| +| nkc_toupper: convert character to upper case +| +|*************************************************************************** + +_nkc_toupper: + movel sp@(4),d1 | Parameter via Stack! + lea toupper,a0 | ^upper case translation table +#ifdef __mcoldfire__ + andl #0xff,d1 | high byte = 0 for word operation +#else + andw #0xff,d1 | high byte = 0 for word operation +#endif + moveb a0@(d1:l),d0 | convert + rts | bye + +|*************************************************************************** +| +| nkc_tolower: convert character to lower case +| +|*************************************************************************** + +_nkc_tolower: + movel sp@(4),d1 | Parameter via Stack! + lea tolower,a0 | ^lower case translation table +#ifdef __mcoldfire__ + andl #0xff,d1 | high byte = 0 for word operation +#else + andw #0xff,d1 | high byte = 0 for word operation +#endif + moveb a0@(d1:l),d0 | convert + rts | bye + +|*************************************************************************** +| LOCAL DATA SECTION +|*************************************************************************** + + .data + +| exception scan code table for cursor block keys +| +| first entry.B: NKCC key code +| second entry.B: scan code returned by TOS +| +| the table is terminated with both entries -1 + +xscantab: + .byte NK_UP , 0x48 | cursor up + .byte NK_DOWN , 0x50 | cursor down + .byte NK_LEFT , 0x4b | cursor left + .byte NK_LEFT , 0x73 | Control cursor left + .byte NK_RIGHT , 0x4d | cursor right + .byte NK_RIGHT , 0x74 | Control cursor right + .byte NK_M_PGUP , 0x49 | Mac: page up + .byte NK_M_PGDOWN , 0x51 | Mac: page down + .byte NK_M_END , 0x4f | Mac: end + .byte NK_INS , 0x52 | Insert + .byte NK_CLRHOME , 0x47 | ClrHome + .byte NK_CLRHOME , 0x77 | Control ClrHome + .byte NK_HELP , 0x62 | Help + .byte NK_UNDO , 0x61 | Undo + .byte NK_M_F11 , 0x45 | Mac: F11 + .byte NK_M_F12 , 0x46 | Mac: F12 + .byte NK_M_F14 , 0x37 | Mac: F14 + .word -1 + +| lower case to upper case conversion table +| (array of 256 unsigned bytes) +toupper: + .byte 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07 + .byte 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f + .byte 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17 + .byte 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f + .byte 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27 + .byte 0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F + .byte 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37 + .byte 0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F + .byte 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47 + .byte 0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F + .byte 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57 + .byte 0x58,0x59,0x5A,0x5B,0x5c,0x5D,0x5E,0x5F + .byte 0x60,0x41,0x42,0x43,0x44,0x45,0x46,0x47 + .byte 0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F + .byte 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57 + .byte 0x58,0x59,0x5A,0x7B,0x7C,0x7D,0x7E,0x7F + .byte 0x80,0x9A,0x90,0x83,0x8E,0xB6,0x8F,0x80 + .byte 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F + .byte 0x90,0x92,0x92,0x93,0x99,0x95,0x96,0x97 + .byte 0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F + .byte 0xA0,0xA1,0xA2,0xA3,0xA5,0xA5,0xA6,0xA7 + .byte 0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF + .byte 0xB7,0xB8,0xB2,0xB2,0xB5,0xB5,0xB6,0xB7 + .byte 0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF + .byte 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7 + .byte 0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF + .byte 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7 + .byte 0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF + .byte 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7 + .byte 0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF + .byte 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7 + .byte 0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF + + +| upper case to lower case conversion table +| (array of 256 unsigned bytes) +tolower: + .byte 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07 + .byte 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f + .byte 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17 + .byte 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f + .byte 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27 + .byte 0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F + .byte 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37 + .byte 0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F + .byte 0x40,0x61,0x62,0x63,0x64,0x65,0x66,0x67 + .byte 0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F + .byte 0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77 + .byte 0x78,0x79,0x7A,0x5B,0x5C,0x5D,0x5E,0x5F + .byte 0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67 + .byte 0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F + .byte 0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77 + .byte 0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F + .byte 0x87,0x81,0x82,0x83,0x84,0x85,0x86,0x87 + .byte 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x84,0x86 + .byte 0x82,0x91,0x91,0x93,0x94,0x95,0x96,0x97 + .byte 0x98,0x94,0x81,0x9B,0x9C,0x9D,0x9E,0x9F + .byte 0xA0,0xA1,0xA2,0xA3,0xA4,0xA4,0xA6,0xA7 + .byte 0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF + .byte 0xB0,0xB1,0xB3,0xB3,0xB4,0xB4,0x85,0xB0 + .byte 0xB1,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF + .byte 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7 + .byte 0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF + .byte 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7 + .byte 0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF + .byte 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7 + .byte 0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF + .byte 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7 + .byte 0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF + + +| ASCII code translation table for Control key +| +| first entry.B: modified ASCII code returned by TOS +| second entry.B: original ASCII code as stored in key table +| +| The table is terminated with both entries 0 + +asc_trans: + .byte 0,0x32 | Control '2' becomes ASCII 0 + .byte 0x1e,0x36 | Control '6' becomes ASCII 0x1e + .byte 0x1f,0x2d | Control '-' becomes ASCII 0x1f + .byte 0xa,0xd | Control Return/Enter: 0xd -> 0xa + .word 0 | terminator + + +| normalized key code -> scan code translation table +| for unshifted key codes +| indexed by function code (NK_...) + +n_to_scan_u: + .byte 0x00 | invalid key code + .byte 0x48 | cursor up + .byte 0x50 | cursor down + .byte 0x4d | cursor right + .byte 0x4b | cursor left + .byte 0x49 | Mac: page up + .byte 0x51 | Mac: page down + .byte 0x4f | Mac: end + .byte 0x0e | Backspace + .byte 0x0f | Tab + .byte 0x72 | Enter + .byte 0x52 | Insert + .byte 0x47 | ClrHome + .byte 0x1c | Return + .byte 0x62 | Help + .byte 0x61 | Undo + .byte 0x3b | function key #1 + .byte 0x3c | function key #2 + .byte 0x3d | function key #3 + .byte 0x3e | function key #4 + .byte 0x3f | function key #5 + .byte 0x40 | function key #6 + .byte 0x41 | function key #7 + .byte 0x42 | function key #8 + .byte 0x43 | function key #9 + .byte 0x44 | function key #10 + .byte 0x45 | Mac: F11 + .byte 0x01 | Esc + .byte 0x46 | Mac: F12 + .byte 0x37 | Mac: F14 + .byte 0x00 | reserved! + .byte 0x53 | Delete + +| normalized key code -> scan code translation table +| for shifted key codes +| indexed by function code (NK_...) + +n_to_scan_s: + .byte 0x00 | invalid key code + .byte 0x48 | cursor up + .byte 0x50 | cursor down + .byte 0x4d | cursor right + .byte 0x4b | cursor left + .byte 0x49 | Mac: page up + .byte 0x51 | Mac: page down + .byte 0x4f | Mac: end + .byte 0x0e | Backspace + .byte 0x0f | Tab + .byte 0x72 | Enter + .byte 0x52 | Insert + .byte 0x47 | ClrHome + .byte 0x1c | Return + .byte 0x62 | Help + .byte 0x61 | Undo + .byte 0x54 | function key #1 + .byte 0x55 | function key #2 + .byte 0x56 | function key #3 + .byte 0x57 | function key #4 + .byte 0x58 | function key #5 + .byte 0x59 | function key #6 + .byte 0x5a | function key #7 + .byte 0x5b | function key #8 + .byte 0x5c | function key #9 + .byte 0x5d | function key #10 + .byte 0x45 | Mac: F11 + .byte 0x01 | Esc + .byte 0x46 | Mac: F12 + .byte 0x37 | Mac: F14 + .byte 0x00 | reserved! + .byte 0x53 | Delete + +|*************************************************************************** +| LOCAL BSS SECTION +|*************************************************************************** + +| .bss + +pkey_unshift: + .long 1 | ^unshifted key table + +pkey_shift: + .long 1 | ^shifted key table + +pkey_caps: + .long 1 | ^CapsLock table |