1 /* -*- c -*- ------------------------------------------------------------- * 2 * 3 * Copyright 2004-2005 Murali Krishnan Ganapathy - All Rights Reserved 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation, Inc., 53 Temple Place Ste 330, 8 * Boston MA 02111-1307, USA; either version 2 of the License, or 9 * (at your option) any later version; incorporated herein by reference. 10 * 11 * ----------------------------------------------------------------------- */ 12 13 #include <string.h> 14 #include <com32.h> 15 #include "com32io.h" 16 #include "tui.h" 17 #include "syslnx.h" 18 19 com32sys_t inreg, outreg; // Global register sets for use 20 21 void getpos(char *row, char *col, char page) 22 { 23 memset(&inreg, 0, sizeof inreg); 24 REG_AH(inreg) = 0x03; 25 REG_BH(inreg) = page; 26 __intcall(0x10, &inreg, &outreg); 27 *row = REG_DH(outreg); 28 *col = REG_DL(outreg); 29 } 30 31 char inputc(char *scancode) 32 { 33 syslinux_idle(); /* So syslinux can perform periodic activity */ 34 memset(&inreg, 0, sizeof inreg); 35 REG_AH(inreg) = 0x10; 36 __intcall(0x16, &inreg, &outreg); 37 if (scancode) 38 *scancode = REG_AH(outreg); 39 return REG_AL(outreg); 40 } 41 42 void getcursorshape(char *start, char *end) 43 { 44 char page = 0; // XXX TODO 45 memset(&inreg, 0, sizeof inreg); 46 REG_AH(inreg) = 0x03; 47 REG_BH(inreg) = page; 48 __intcall(0x10, &inreg, &outreg); 49 *start = REG_CH(outreg); 50 *end = REG_CL(outreg); 51 } 52 53 void setcursorshape(char start, char end) 54 { 55 memset(&inreg, 0, sizeof inreg); 56 REG_AH(inreg) = 0x01; 57 REG_CH(inreg) = start; 58 REG_CL(inreg) = end; 59 __intcall(0x10, &inreg, &outreg); 60 } 61 62 void setvideomode(char mode) 63 { 64 memset(&inreg, 0, sizeof inreg); 65 REG_AH(inreg) = 0x00; 66 REG_AL(inreg) = mode; 67 __intcall(0x10, &inreg, &outreg); 68 } 69 70 // Get char displayed at current position 71 unsigned char getcharat(char page) 72 { 73 memset(&inreg, 0, sizeof inreg); 74 REG_AH(inreg) = 0x08; 75 REG_BH(inreg) = page; 76 __intcall(0x16, &inreg, &outreg); 77 return REG_AL(outreg); 78 } 79
