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Add integration device commands to read CPU cycle count and info

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This commit is contained in:
Jonathan Campbell 2025-05-04 22:23:26 -07:00
parent e58f5ded15
commit 1c07709727
2 changed files with 29 additions and 0 deletions
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8
include/iglib.h
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@ -112,6 +112,14 @@ extern uint16_t DOSBOXID_VAR dosbox_id_baseio;
#define DOSBOX_ID_REG_INJECT_NMI (0x00808602UL)
#define DOSBOX_ID_REG_CPU_CYCLES (0x55504300UL) /* fixed cycle count, which may vary if max or auto */
#define DOSBOX_ID_REG_CPU_MAX_PERCENT (0x55504301UL) /* for max cycles, percentage from 0 to 100 */
#define DOSBOX_ID_REG_CPU_CYCLES_INFO (0x55504302UL) /* info about cycles, including fixed, auto, max */
# define DOSBOX_ID_REG_CPU_CYCLES_INFO_MODE_MASK (0xFUL << 0UL)
# define DOSBOX_ID_REG_CPU_CYCLES_INFO_FIXED (1UL << 0UL)
# define DOSBOX_ID_REG_CPU_CYCLES_INFO_MAX (2UL << 0UL)
# define DOSBOX_ID_REG_CPU_CYCLES_INFO_AUTO (3UL << 0UL)
#define DOSBOX_ID_REG_8237_INJECT_WRITE (0x00823700UL)
#define DOSBOX_ID_REG_8237_INJECT_READ (0x00823780UL)

21
src/ints/bios.cpp
View File

@ -873,6 +873,27 @@ void dosbox_integration_trigger_read() {
case DOSBOX_ID_RESET_INDEX_CODE: /* interface reset result */
break;
case DOSBOX_ID_REG_CPU_CYCLES:
if (CPU_CycleMax < 0x80000000)
dosbox_int_register = (uint32_t)CPU_CycleMax;
else
dosbox_int_register = (uint32_t)0x7FFFFFFFUL;
break;
case DOSBOX_ID_REG_CPU_MAX_PERCENT:
dosbox_int_register = CPU_CyclePercUsed;
break;
case DOSBOX_ID_REG_CPU_CYCLES_INFO:
dosbox_int_register = 0;
if (CPU_CycleAutoAdjust)
dosbox_int_register |= DOSBOX_ID_REG_CPU_CYCLES_INFO_MAX;
else if (CPU_AutoDetermineMode &CPU_AUTODETERMINE_CYCLES)
dosbox_int_register |= DOSBOX_ID_REG_CPU_CYCLES_INFO_AUTO;
else
dosbox_int_register |= DOSBOX_ID_REG_CPU_CYCLES_INFO_FIXED;
break;
default:
dosbox_int_register = 0xAA55AA55;
dosbox_int_error = true;