Tue, 15 Nov 2011 09:30:57 +0000
Fix BSR0 UDS/LDS bit polarity
Patch-Author: Andrew Warkentin <andreww591!gmail>
Patch-MessageID: <4EC200CE.2020304@gmail.com>
... "The second bug is simpler - you had the UDS and LDS bits in BSR0 inverted (they are supposed to be active low)."
| philpem@86 | 1 | #ifndef _KEYBOARD_H |
| philpem@86 | 2 | #define _KEYBOARD_H |
| philpem@86 | 3 | |
| philpem@80 | 4 | #include "SDL.h" |
| philpem@86 | 5 | |
| philpem@80 | 6 | /// Keyboard buffer size in bytes |
| philpem@80 | 7 | #define KEYBOARD_BUFFER_SIZE 256 |
| philpem@80 | 8 | |
| philpem@86 | 9 | typedef struct { |
| philpem@80 | 10 | /// Key states |
| philpem@80 | 11 | int keystate[0x80]; |
| philpem@80 | 12 | |
| philpem@80 | 13 | /// Keyboard buffer |
| philpem@90 | 14 | uint8_t buffer[KEYBOARD_BUFFER_SIZE]; |
| philpem@80 | 15 | |
| philpem@80 | 16 | /// Read pointer |
| philpem@80 | 17 | size_t readp; |
| philpem@80 | 18 | |
| philpem@80 | 19 | /// Write pointer |
| philpem@80 | 20 | size_t writep; |
| philpem@80 | 21 | |
| philpem@80 | 22 | /// Number of bytes in keyboard buffer |
| philpem@80 | 23 | size_t buflen; |
| philpem@80 | 24 | |
| philpem@80 | 25 | /// Transmit Interrupt Enable |
| philpem@80 | 26 | bool txie; |
| philpem@90 | 27 | |
| philpem@80 | 28 | /// Receive Interrupt Enable |
| philpem@80 | 29 | bool rxie; |
| philpem@91 | 30 | |
| philpem@91 | 31 | /// "Keyboard State Changed" flag |
| philpem@91 | 32 | bool update_flag; |
| philpem@86 | 33 | } KEYBOARD_STATE; |
| philpem@86 | 34 | |
| philpem@86 | 35 | /** |
| philpem@80 | 36 | * Initialise a keyboard state block. |
| philpem@86 | 37 | * |
| philpem@80 | 38 | * Call this once when the keyboard is added to the emulation. |
| philpem@86 | 39 | */ |
| philpem@80 | 40 | void keyboard_init(KEYBOARD_STATE *ks); |
| philpem@86 | 41 | |
| philpem@86 | 42 | /** |
| philpem@80 | 43 | * SDL_Event delegation routine. |
| philpem@86 | 44 | * |
| philpem@80 | 45 | * Call this when an SDL keyup or keydown event is received. |
| philpem@86 | 46 | */ |
| philpem@80 | 47 | void keyboard_event(KEYBOARD_STATE *ks, SDL_Event *ev); |
| philpem@80 | 48 | |
| philpem@80 | 49 | /** |
| philpem@80 | 50 | * Keyboard scan routine. |
| philpem@80 | 51 | * |
| philpem@80 | 52 | * Call this periodically to scan the keyboard. 60 times/sec should be fine. |
| philpem@80 | 53 | */ |
| philpem@80 | 54 | void keyboard_scan(KEYBOARD_STATE *ks); |
| philpem@80 | 55 | |
| philpem@80 | 56 | bool keyboard_get_irq(KEYBOARD_STATE *ks); |
| philpem@80 | 57 | uint8_t keyboard_read(KEYBOARD_STATE *ks, uint8_t addr); |
| philpem@80 | 58 | void keyboard_write(KEYBOARD_STATE *ks, uint8_t addr, uint8_t val); |
| philpem@86 | 59 | |
| philpem@86 | 60 | #endif |