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https://github.com/cc65/cc65.git
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166 lines
6.7 KiB
C
166 lines
6.7 KiB
C
/*****************************************************************************/
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/* */
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/* sym1.h */
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/* */
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/* Sym-1 system-specific definitions */
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/* */
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/* */
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/* */
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/* (C) 2020 Wayne Parham */
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/* EMail: wayne@parhamdata.com */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef _SYM1_H
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#define _SYM1_H
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/* Check for errors */
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#if !defined(__SYM1__)
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# error This module may only be used when compiling for the Sym-1!
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#endif
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Display character definitions */
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#define DISP_1 0x06 // '1'
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#define DISP_2 0x5B // '2'
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#define DISP_3 0x4F // '3'
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#define DISP_4 0x66 // '4'
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#define DISP_5 0x6D // '5'
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#define DISP_6 0x7C // '6'
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#define DISP_7 0x07 // '7'
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#define DISP_8 0x7F // '8'
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#define DISP_9 0x67 // '9'
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#define DISP_0 0x3F // '0'
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#define DISP_A 0x77 // 'A'
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#define DISP_b 0x7C // 'b'
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#define DISP_C 0x39 // 'C'
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#define DISP_c 0x58 // 'c'
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#define DISP_d 0x5E // 'd'
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#define DISP_E 0x79 // 'E'
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#define DISP_e 0x7B // 'e'
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#define DISP_F 0x71 // 'F'
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#define DISP_G 0x7D // 'G'
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#define DISP_g 0x6F // 'g'
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#define DISP_H 0x76 // 'H'
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#define DISP_h 0x74 // 'h'
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#define DISP_I 0x06 // 'I'
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#define DISP_i 0x04 // 'i'
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#define DISP_J 0x1E // 'J'
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#define DISP_K 0x74 // 'K'
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#define DISP_L 0x38 // 'L'
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#define DISP_M_1 0x33 // 'M'
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#define DISP_M_2 0x27 // 2nd half
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#define DISP_n 0x54 // 'n'
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#define DISP_O 0x3F // 'O'
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#define DISP_o 0x5C // 'o'
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#define DISP_P 0x73 // 'P'
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#define DISP_q 0x67 // 'q'
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#define DISP_r 0x50 // 'r'
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#define DISP_S 0x6D // 'S'
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#define DISP_t 0x46 // 't'
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#define DISP_U 0x3E // 'U'
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#define DISP_u 0x1C // 'u'
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#define DISP_V_1 0x64 // 'V'
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#define DISP_V_2 0x52 // 2nd half
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#define DISP_W_1 0x3C // 'W'
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#define DISP_W_2 0x1E // 2nd half
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#define DISP_Y 0x6E // 'Y'
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#define DISP_Z 0x5B // 'Z'
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#define DISP_SPACE 0x00 // ' '
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#define DISP_PERIOD 0x80 // '.'
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#define DISP_HYPHEN 0x40 // '-'
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#define DISP_APOSTR 0x20 // '''
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#define DISP_EQUAL 0x41 // '='
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#define DISP_3_BAR 0x49 // '='
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#define DISP_BOTTOM 0x08 // '_'
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#define DISP_TOP 0x01 // Top segment
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#define DISP_LEFT 0x30 // '|' Left side, both segments
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#define DISP_RIGHT 0x06 // '|' Right side, both segments
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#define DISP_DEGREE 0x63 // 'o' An 'o' character in the upper segments
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#define DISP_HAT 0x23 // 'n' An 'n' character in the upper segments
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#define DISP_FORK 0x62 // 'u' A 'u' character in the upper segments
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#define DISP_SLASH 0x51 // '/'
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#define DISP_BACKSLASH 0x34 // '\'
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#define DISP_TOP_RIGHT 0x02 // Top right segment
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#define DISP_TOP_LEFT 0x20 // Top left segment
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#define DISP_LOW_RIGHT 0x04 // Lower right segment
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#define DISP_LOW_LEFT 0x10 // Lower left segment
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/*****************************************************************************/
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/* Hardware */
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/*****************************************************************************/
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#include <_6522.h>
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#define VIA1 (*(struct __6522*)0xA000) // U25
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#define VIA2 (*(struct __6522*)0xA800) // U28
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#define VIA3 (*(struct __6522*)0xAC00) // U29
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struct _display {
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unsigned char d0; // left-most seven-segment display
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unsigned char d1; // second seven-segment display
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unsigned char d2; // third seven-segment display
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unsigned char d3; // fouth seven-segment display
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unsigned char d4; // fifth seven-segment display
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unsigned char d5; // sixth seven-segment display
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unsigned char d6; // buffer byte to the right
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};
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#define DISPLAY (*(struct _display*)0xA640)
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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void beep (void);
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/* Beep sound. */
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void fdisp (void);
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/* Flash display */
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int __fastcall__ loadt (unsigned char);
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/* Read from tape */
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int __fastcall__ dumpt (unsigned char, const void*, const void*);
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/* Write to tape */
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/* End of sym1.h */
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#endif
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