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Change magic numbers to readable constants

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This commit is contained in:
Jonathan Campbell 2025-05-04 14:21:06 -07:00
parent 66550194cd
commit fc7d762b0a
2 changed files with 15 additions and 12 deletions
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8
include/iglib.h
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@ -22,10 +22,10 @@ extern uint16_t DOSBOXID_VAR dosbox_id_baseio;
# define DOSBOX_IDPORT(x) (dosbox_id_baseio+(x))
#endif
#define DOSBOX_ID_INDEX (0U)
#define DOSBOX_ID_DATA (1U)
#define DOSBOX_ID_STATUS (2U)
#define DOSBOX_ID_COMMAND (2U)
#define DOSBOX_ID_INDEX (0U) /* R/W */
#define DOSBOX_ID_DATA (1U) /* R/W */
#define DOSBOX_ID_STATUS (2U) /* R */
#define DOSBOX_ID_COMMAND (2U) /* W */
/* bits 7-6: register select byte index
* bits 5-4: register byte index

19
src/ints/bios.cpp
View File

@ -55,6 +55,9 @@ extern bool PS1AudioCard;
#include <sys/stat.h>
#include "version_string.h"
#define DOSBOX_INCLUDE
#include "iglib.h"
#if C_LIBPNG
#include <png.h>
#endif
@ -1187,17 +1190,17 @@ static void dosbox_integration_port02_command_w(Bitu port,Bitu val,Bitu iolen) {
(void)port;
(void)iolen;
switch (val) {
case 0x00: /* reset latch */
case DOSBOX_ID_CMD_RESET_LATCH:
dosbox_int_register_shf = 0;
dosbox_int_regsel_shf = 0;
break;
case 0x01: /* flush write */
case DOSBOX_ID_CMD_FLUSH_WRITE:
if (dosbox_int_register_shf != 0) {
dosbox_integration_trigger_write();
dosbox_int_register_shf = 0;
}
break;
case 0x20: /* push state */
case DOSBOX_ID_CMD_PUSH_STATE:
if (dosbox_int_push_save_state()) {
dosbox_int_register_shf = 0;
dosbox_int_regsel_shf = 0;
@ -1212,7 +1215,7 @@ static void dosbox_integration_port02_command_w(Bitu port,Bitu val,Bitu iolen) {
dosbox_int_error = true;
}
break;
case 0x21: /* pop state */
case DOSBOX_ID_CMD_POP_STATE:
if (dosbox_int_pop_save_state()) {
LOG(LOG_MISC,LOG_DEBUG)("DOSBOX-X IG state restored");
}
@ -1221,7 +1224,7 @@ static void dosbox_integration_port02_command_w(Bitu port,Bitu val,Bitu iolen) {
dosbox_int_error = true;
}
break;
case 0x22: /* discard state */
case DOSBOX_ID_CMD_DISCARD_STATE:
if (dosbox_int_discard_save_state()) {
LOG(LOG_MISC,LOG_DEBUG)("DOSBOX-X IG state discarded");
}
@ -1230,13 +1233,13 @@ static void dosbox_integration_port02_command_w(Bitu port,Bitu val,Bitu iolen) {
dosbox_int_error = true;
}
break;
case 0x23: /* discard all state */
case DOSBOX_ID_CMD_DISCARD_ALL_STATE:
while (dosbox_int_discard_save_state());
break;
case 0xFE: /* clear error */
case DOSBOX_ID_CMD_CLEAR_ERROR:
dosbox_int_error = false;
break;
case 0xFF: /* reset interface */
case DOSBOX_ID_CMD_RESET_INTERFACE:
dosbox_int_busy = false;
dosbox_int_error = false;
dosbox_int_regsel = 0xAA55BB66;