| 0,0 → 1,90 |
|---|
| /* This file is part of the SvarCOM project and is published under the terms |
| * of the MIT license. |
| * |
| * Copyright (C) 2021-2022 Mateusz Viste |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| */ |
| |
| /* |
| * break |
| */ |
| |
| static enum cmd_result cmd_break(struct cmd_funcparam *p) { |
| unsigned char brkflag = 0; |
| |
| if (cmd_ishlp(p)) { |
| nls_outputnl(14,0); /* "Sets or clears extended CTRL+C checking" */ |
| outputnl(""); |
| outputnl("BREAK [ON | OFF]"); |
| outputnl(""); |
| nls_outputnl(14,1); /* "Type BREAK without a parameter to display the current BREAK setting." */ |
| return(CMD_OK); |
| } |
| |
| /* no params: display current break state */ |
| if (p->argc == 0) { |
| _asm { |
| push ax |
| push dx |
| |
| mov ax, 0x3300 /* query break-check flag */ |
| int 0x21 /* status (0=OFF, 1=ON) in DL */ |
| mov [brkflag], dl |
| |
| pop dx |
| pop ax |
| } |
| if (brkflag == 0) { |
| nls_outputnl(14,2); /* "BREAK is off" */ |
| } else { |
| nls_outputnl(14,3); /* "BREAK is on" */ |
| } |
| return(CMD_OK); |
| } |
| |
| /* too many params? */ |
| if (p->argc > 1) { |
| nls_outputnl(0,4); |
| return(CMD_FAIL); |
| } |
| |
| /* exactly 1 parameter - "on" or "off" */ |
| if (imatch(p->argv[0], "on")) { |
| brkflag = 1; |
| } else if (!imatch(p->argv[0], "off")) { |
| nls_outputnl(0,6); /* "Invalid parameter" */ |
| return(CMD_FAIL); |
| } |
| |
| /* set break accordingly to brkflag */ |
| _asm { |
| push ax |
| push dx |
| |
| mov ax, 0x3301 /* set break-check level */ |
| mov dl, [brkflag] /* 0=OFF 1=ON */ |
| int 0x21 |
| |
| pop dx |
| pop ax |
| } |
| |
| return(CMD_OK); |
| } |