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https://github.com/jscrane/r65emu.git
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4fa4faa278
* ps/2 and hardware serial keyboards * serial keyboard * add ps2_kbd shim * hardware_run() and hardware_debug_cpu() * ... * ... * updates * refactoring * refactoring * run instructions
89 lines
1.4 KiB
C++
89 lines
1.4 KiB
C++
#include <stdint.h>
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#include "hardware.h"
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#if defined(USE_PS2_KBD)
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#include <PS2KeyRaw.h>
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#include "ps2_raw_kbd.h"
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static PS2KeyRaw keyboard;
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bool ps2_raw_kbd::available() {
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return keyboard.available();
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}
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#define PS2_F1 0x05
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#define PS2_F2 0x06
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#define PS2_F3 0x04
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#define PS2_F4 0x0C
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#define PS2_F5 0x03
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#define PS2_F6 0x0B
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#define PS2_F7 0x83
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#define PS2_F8 0x0A
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#define PS2_F9 0x01
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#define PS2_F10 0x09
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#define PS2_F11 0x78
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#define PS2_F12 0x07
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static uint8_t fn(uint8_t key) {
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switch(key) {
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case PS2_F1: return 1;
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case PS2_F2: return 2;
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case PS2_F3: return 3;
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case PS2_F4: return 4;
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case PS2_F5: return 5;
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case PS2_F6: return 6;
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case PS2_F7: return 7;
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case PS2_F8: return 8;
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case PS2_F9: return 9;
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case PS2_F10: return 01;
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case PS2_F11: return 11;
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case PS2_F12: return 12;
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}
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return 0;
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}
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static bool brk = false;
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uint16_t ps2_raw_kbd::read() {
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if (!available())
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return 0;
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int s = keyboard.read();
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if (s < 0)
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return 0;
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uint8_t k = (s & 0xff);
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if (k == 0xf0) {
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brk = true;
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return 0;
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}
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uint8_t f = fn(k);
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if (f >= 1 && brk) {
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fnkey(f);
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brk = false;
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return 0;
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}
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uint16_t r = brk? (0x8000 | k): k;
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brk = false;
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return r;
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}
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void ps2_raw_kbd::reset() {
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keyboard.begin(PS2_KBD_DATA, PS2_KBD_IRQ);
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_m.reset();
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}
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void ps2_raw_kbd::poll() {
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if (available()) {
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uint16_t scan = read();
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uint8_t k = (scan & 0xff);
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if (scan & 0x8000)
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_m.up(k);
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else
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_m.down(k);
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}
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}
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#endif
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