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rtc: set CMOS battery charge status, add diagnostic status register

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SuperMaxusa 2025-08-31 21:10:30 +03:00 • committed by Fabian
parent 21a6318a13
commit 865725bbac
1 changed files with 14 additions and 1 deletions
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15
src/rtc.js
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@ -22,6 +22,7 @@ export const CMOS_STATUS_A = 0x0a;
export const CMOS_STATUS_B = 0x0b;
export const CMOS_STATUS_C = 0x0c;
export const CMOS_STATUS_D = 0x0d;
export const CMOS_DIAG_STATUS = 0x0e;
export const CMOS_RESET_CODE = 0x0f;
export const CMOS_FLOPPY_DRIVE_TYPE = 0x10;
@ -86,6 +87,8 @@ export function RTC(cpu)
this.cmos_b = 2;
this.cmos_c = 0;
this.cmos_diag_status = 0;
this.nmi_disabled = 0;
this.update_interrupt = false;
@ -119,6 +122,7 @@ RTC.prototype.get_state = function()
state[11] = this.nmi_disabled;
state[12] = this.update_interrupt;
state[13] = this.update_interrupt_time;
state[14] = this.cmos_diag_status;
return state;
};
@ -139,6 +143,7 @@ RTC.prototype.set_state = function(state)
this.nmi_disabled = state[11];
this.update_interrupt = state[12] || false;
this.update_interrupt_time = state[13] || 0;
this.cmos_diag_status = state[14] || 0;
};
RTC.prototype.timer = function(time, legacy_mode)
@ -311,7 +316,11 @@ RTC.prototype.cmos_port_read = function()
return c;
case CMOS_STATUS_D:
return 0;
return 1 << 7; // CMOS battery charged
case CMOS_DIAG_STATUS:
dbg_log("cmos diagnostic status read", LOG_RTC);
return this.cmos_diag_status;
case CMOS_CENTURY:
case CMOS_CENTURY2:
@ -376,6 +385,10 @@ RTC.prototype.cmos_port_write = function(data_byte)
dbg_log("cmos b=" + h(this.cmos_b, 2), LOG_RTC);
break;
case CMOS_DIAG_STATUS:
this.cmos_diag_status = data_byte;
break;
case CMOS_RTC_SECONDS_ALARM:
case CMOS_RTC_MINUTES_ALARM:
case CMOS_RTC_HOURS_ALARM: