RTC works.

Signed-off-by: Jakub Doka <jakub.doka2@gmail.com>

kernel/src/holeybytes/ecah.rs

@@ -1,5 +1,7 @@
 //! Environment call handling routines
 
+use core::arch::asm;
+
 use {alloc::boxed::Box, core::cell::LazyCell, hbvm::mem::Address};
 
 use crate::{
@@ -288,6 +290,20 @@ pub fn handler(thr: &mut ExecThread, pid: &usize) {
                     .buffer_subscribe(*pid, buffer_id);
             }
         }
+		8 => {
+			// Disable/enable interrupts.
+			// TODO: This is the quickest dirtiest hack to ever exist.
+			let state = thr.vm.registers[3].cast::<u8>();
+			if state == 0 {
+				debug!("Interrupts disabled.");
+				unsafe {asm!("cli");};
+			}
+			else
+			{
+				debug!("Interrupts enabled.");
+				unsafe {asm!("sti");};
+			}
+		}
         _ => {
             log::error!("Syscall unknown {:?}{:?}", ecall_number, thr.vm.registers);
         }

sysdata/libraries/stn/src/sleep.hb

@@ -4,4 +4,16 @@ $subscribe_to_interrupt := fn(interrupt_number: u8): bool {
 // Pauses execution until the interrupt occures
 $sleep_until_interrupt := fn(interrupt_number: u8): void {
 	@eca(6, interrupt_number)
+}
+
+//InterruptGuard := struct {}
+
+// Disables recieving interrupts..
+$disable_interrupts := fn(): void {
+	@eca(8, false)
+}
+
+// Enables recieving interrupts..
+$enable_interrupts := fn(): void {
+	@eca(8, true)
 }

sysdata/programs/ps2_driver/README.md

@@ -1,23 +0,0 @@
-# Unified PS/2 Driver
-
-Te entire thing is held together inspite 
-
-## !!Assumptions!!
-Anyone who works on this should work to keep this list as small as possible/remove as many of these as possible.
-- Bit 5 of the response form 0x64 indicates which port the data is coming from. (Not true on all systems)
-- A parity or timeout error never occurs.
-- PS/2 controller exists.
-- Both PS/2 ports being broken doesn't need handling.
-- One PS/2 port being broken doesn't need special attention.
-- PS/2 controller doesn't need to perform a self-check.
-- These DeviceIDs never exist:
-    - 0xFFFD
-    - 0xFFFE
-    - 0xFFFF
-    - 0x01xx
-    - 0x03xx
-    - 0x04xx
-- Literally all PS/2 keyboards can be handeled the exact same way. We have the capability for detecting different keyboard types, I just don't bother with it because that would litreally take months to get working.
-- The device doesn't send any data while we're waiting for an `ACK`.
-
-Supporting mice in the keyboard port and vice versa was a ***bad*** idea, but I do not regret it because it means we're "superior" to real world operating systems.

sysdata/programs/ps2_driver/src/controller.hb

@@ -1,101 +0,0 @@
-.{memory, log} := @use("stn");
-.{bit0, bit1, bit5, bit6, bit7} := @use("bits.hb");
-.{Port, PORT_AT_STARTUP} := @use("port.hb")
-
-port1 := @as(Port, PORT_AT_STARTUP)
-port2 := @as(Port, PORT_AT_STARTUP)
-
-//wiki.osdev.org/"8042"_PS/2_Controller#PS/2_Controller_IO_Ports
-$CONTROLLER_PORT := 0x64
-$DATA_PORT := 0x60
-
-$disable_port1 := fn(): void memory.outb(CONTROLLER_PORT, 0xAD)
-$enable_port1 := fn(): void memory.outb(CONTROLLER_PORT, 0xAE)
-$disable_port2 := fn(): void memory.outb(CONTROLLER_PORT, 0xA7)
-$enable_port2 := fn(): void memory.outb(CONTROLLER_PORT, 0xA8)
-
-test_port1 := fn(): bool {
-	memory.outb(CONTROLLER_PORT, 0xAB)
-	loop if has_input(get_info()) break
-	input := get_input()
-	return input == 0x0
-}
-
-test_port2 := fn(): bool {
-	memory.outb(CONTROLLER_PORT, 0xA9)
-	loop if has_input(get_info()) break
-	input := get_input()
-	return input == 0x0
-}
-
-get_config_byte := fn(): u8 {
-	memory.outb(CONTROLLER_PORT, 0x20)
-	loop if has_input(get_info()) break
-	return get_input()
-}
-
-Info := struct {d: u8}
-
-$get_info := fn(): Info return .(memory.inb(CONTROLLER_PORT))
-//inline when can
-has_input := fn(info: Info): bool return bit0(info.d)
-can_send := fn(info: Info): bool return bit1(info.d) == false
-timed_out := fn(info: Info): bool return bit6(info.d)
-check_parity := fn(info: Info): bool return bit7(info.d)
-get_port := fn(info: Info): ^Port {
-	if bit5(info.d) {
-		return &port2
-	} else {
-		return &port1
-	}
-}
-
-//T
-port2_ptr := &port2
-send_byte := fn(port: ^Port, byte: u8): void {
-	if port == port2_ptr {
-		memory.outb(CONTROLLER_PORT, 0xD4)
-	}
-	loop if can_send(get_info()) break
-	memory.outb(DATA_PORT, byte)
-}
-
-$get_input := fn(): u8 return memory.inb(DATA_PORT)
-$write_out := fn(data: u8): void memory.outb(DATA_PORT, data)
-
-flush_input := fn(): void {
-	loop if has_input(get_info()) == false break else get_info()
-}
-
-init := fn(): void {
-	disable_port1()
-	disable_port2()
-	//Disables ports to make sure that they won't interfere with the setup process.
-
-	flush_input()
-
-	enable_port2()
-	port2.exists = bit5(@inline(get_config_byte)) == false
-	disable_port2()
-
-	flush_input()
-
-	port1.exists = test_port1()
-
-	if port2.exists {
-		port2.exists = test_port2()
-	}
-
-	if (port1.exists | port2.exists) == false {
-		log.error("No ports detected! No input will be processed! Cannot handle this!")
-	}
-
-	if port1.exists {
-		log.info("Port 1 exists.")
-		enable_port1()
-	}
-	if port2.exists {
-		log.info("Port 2 exists.")
-		enable_port2()
-	}
-}

sysdata/programs/ps2_driver/src/main.hb

@@ -1,150 +1,5 @@
-.{memory, log, buffer, string} := @use("stn");
-.{MouseEvent} := @use("lib:intouch").events;
-.{bit0, bit1, bit2, bit3, bit4} := @use("bits.hb")
-devices := @use("devices.hb")
-controller := @use("controller.hb");
-.{Info, Port} := controller
-mouse := @use("mouse.hb")
-
-mouse_buffer := 0
-keyboard_buffer := 0
-info := Info.(0)
-
-send_command := fn(port: ^Port, byte: u8): void {
-	tries := 3
-	loop if tries == 0 break else {
-		controller.send_byte(port, byte)
-		loop {
-			info = controller.get_info()
-			if controller.has_input(info) == false {
-				continue
-			}
-			input := controller.get_input()
-			if controller.get_port(info) != port {
-				if check_complete(port) == false {
-					port.packet[port.packet_length] = input
-					port.packet_length += 1
-				}
-				continue
-			}
-			if input == 0xFA {
-				return
-			} else {
-				break
-			}
-		}
-		tries -= 1
-	}
-}
-
-enable_streaming := fn(port: ^Port): void {
-	@inline(send_command, port, 0xF4)
-}
-
-process := fn(port: ^controller.Port): void {
-	if port.device.value < devices.MOUSE_5_BUTTON.value {
-		event := MouseEvent.(0, 0, false, false, false)
-
-		event.left = bit0(port.packet[0])
-		event.right = bit1(port.packet[0])
-		event.middle = bit2(port.packet[0])
-
-		event.x_change = @intcast(port.packet[1])
-		event.y_change = @intcast(port.packet[2])
-
-		buffer.write(MouseEvent, mouse_buffer, &event)
-	} else if port.device == devices.MOUSE_INIT_1 {
-		port.device.value = port.packet[0]
-		if port.device != devices.MOUSE_SCROLLWHEEL {
-			enable_streaming(port)
-			return
-		}
-		port.device = devices.MOUSE_INIT_2
-	} else if port.device == devices.MOUSE_INIT_2 {
-		port.device.value = port.packet[0]
-	} else if port.device == devices.NO_DEVICE {
-		if port.packet_length == 1 {
-			port.device.value = port.packet[0]
-			enable_streaming(port)
-			//TODO: Upgrade mouse.
-		} else {
-			port.device.value = port.packet[1] | port.packet[0] << 8
-			enable_streaming(port)
-		}
-		log.info("Identified device!")
-		log.print(port.device.value, .{radix: 16})
-	} else {
-		log.info("KEY PRESSED")
-	}
-}
-
-check_complete := fn(port: ^controller.Port): bool {
-	last_value := port.packet[port.packet_length - 1]
-	if port.device == devices.NO_DEVICE {
-		if last_value == 0 | last_value == 3 | last_value == 4 {
-			return true
-		} else if port.packet_length == 2 {
-			return true
-		}
-	} else if port.device == devices.MOUSE_3_BUTTON {
-		if port.packet_length == 3 return true
-	} else if port.device == devices.MOUSE_SCROLLWHEEL | port.device == devices.MOUSE_5_BUTTON {
-		if port.packet_length == 4 return true
-	} else {
-		if port.packet[0] == 0xE1 {
-			if port.packet_length == 6 {
-				return true
-			}
-		} else if port.packet[0] != 0xE0 {
-			return true
-		} else if port.packet_length == 2 & port.packet[1] != 0x2A & port.packet[1] != 0xB7 {
-			return true
-		} else if port.packet_length == 4 {
-			return true
-		}
-	}
-	return false
-}
+Port := @use("port.hb").Port;
 
 main := fn(): void {
-	mouse_buffer = buffer.create("PS/2 Mouse")
 
-	controller.init()
-
-	if controller.port1.exists {
-		//log.info("Port 1 exists.")
-		controller.send_byte(@bitcast(0), 0xF4)
-	}
-	if controller.port2.exists {
-		//controller.send_byte(&controller.port2, 0xF4)
-	}
-
-	loop {
-		info = controller.get_info()
-
-		if controller.timed_out(info) {
-			log.error("Timeout error! Cannot handle these!")
-		}
-		if controller.check_parity(info) {
-			log.error("Parity error! Cannot handle these!")
-		}
-		/*
-		if controller.has_input(info) {
-			port := controller.get_port(info)
-			if port.packet_length > 0 & check_complete(port) {
-				process(port)
-			}
-			input := controller.get_input()
-			/*if input == 0xAA & port.can_hot_plug {
-				port.device = devices.NO_DEVICE
-				controller.send_byte(port, 0xF4)
-			}*/
-			port.packet[port.packet_length] = input
-			port.packet_length += 1
-			if check_complete(port) {
-				process(port)
-				port.packet_length = 0
-			}
-		}*/
-	}
 }

sysdata/programs/ps2_driver/src/port.hb

@@ -1,21 +1,52 @@
-.{DeviceID, NO_DEVICE} := @use("devices.hb")
+log := @use("stn:log")
 
-State := struct {s: u8}
-$Recive := State.(0)
-$Reboot := State.(1)
 
-Port := packed struct {
-	exists: bool,
-	device: DeviceID,
-	packet: [8]u8,
-	packet_length: u8,
-	can_hot_plug: bool,
+
+Uninitialized := struct {
+
 }
 
-$PORT_AT_STARTUP := Port.(
-	true,
-	NO_DEVICE,
-	.[0, 0, 0, 0, 0, 0, 0, 0],
-	0,
-	true,
-)
+ThreeButtonMouse := struct {
+
+}
+
+ScrollMouse := struct {
+
+}
+
+FiveButtonMouse := struct {
+
+}
+
+Keyboard := struct {
+
+}
+
+DeviceType := enum {
+	None,
+	Uninitialized,
+	ThreeButtonMouse,
+	ScrollMouse,
+	FiveButtonMouse,
+	Keyboard,
+}
+
+Port := struct {
+	device_type: DeviceType,
+	_: union {
+		uninitialized: Uninitialized,
+		three_button_mouse: ThreeButtonMouse,
+		scroll_mouse: ScrollMouse,
+		five_button_mouse: FiveButtonMouse,
+		keyboard: Keyboard,
+	},
+	recive_byte := fn(self: Self, byte: u8): void {
+		match self.device_type {
+			.Uninitialized => @inline(self._.uninitialized.recive_byte, byte)
+			.ThreeButtonMouse => @inline(self._.three_button_mouse.recive_byte, byte)
+			.ScrollMouse => @inline(self._.scroll_mouse.recive_byte, byte)
+			.FiveButtonMouse => @inline(self._.five_button_mouse.recive_byte, byte)
+			.Keyboard => @inline(self._.keyboard.recive_byt, byte)
+		}
+	},
+}

sysdata/programs/ps2_driver_retired/README.md

@@ -0,0 +1,23 @@
+# Unified PS/2 Driver
+
+Te entire thing is held together inspite 
+
+## !!Assumptions!!
+Anyone who works on this should work to keep this list as small as possible/remove as many of these as possible.
+- Bit 5 of the response form 0x64 indicates which port the data is coming from. (Not true on all systems)
+- A parity or timeout error never occurs.
+- PS/2 controller exists.
+- Both PS/2 ports being broken doesn't need handling.
+- One PS/2 port being broken doesn't need special attention.
+- PS/2 controller doesn't need to perform a self-check.
+- These DeviceIDs never exist:
+    - 0xFFFD
+    - 0xFFFE
+    - 0xFFFF
+    - 0x01xx
+    - 0x03xx
+    - 0x04xx
+- Literally all PS/2 keyboards can be handeled the exact same way. We have the capability for detecting different keyboard types, I just don't bother with it because that would litreally take months to get working.
+- The device doesn't send any data while we're waiting for an `ACK`.
+
+Supporting mice in the keyboard port and vice versa was a ***bad*** idea, but I do not regret it because it means we're "superior" to real world operating systems.

sysdata/programs/ps2_driver_retired/meta.toml

@@ -0,0 +1,11 @@
+[package]
+name = "ps2_driver"
+authors = ["Peony"]
+
+[dependants.libraries]
+
+[dependants.binaries]
+hblang.version = "1.0.0"
+
+[build]
+command = "hblang src/main.hb"

sysdata/programs/ps2_driver_retired/src/controller.hb

@@ -0,0 +1,101 @@
+.{memory, log} := @use("stn");
+.{bit0, bit1, bit5, bit6, bit7} := @use("bits.hb");
+.{Port, PORT_AT_STARTUP} := @use("port.hb")
+
+port1 := @as(Port, PORT_AT_STARTUP)
+port2 := @as(Port, PORT_AT_STARTUP)
+
+//wiki.osdev.org/"8042"_PS/2_Controller#PS/2_Controller_IO_Ports
+$CONTROLLER_PORT := 0x64
+$DATA_PORT := 0x60
+
+//These are implementations of a few simple controller commands.
+$disable_port1 := fn(): void memory.outb(CONTROLLER_PORT, 0xAD)
+$enable_port1 := fn(): void memory.outb(CONTROLLER_PORT, 0xAE)
+$disable_port2 := fn(): void memory.outb(CONTROLLER_PORT, 0xA7)
+$enable_port2 := fn(): void memory.outb(CONTROLLER_PORT, 0xA8)
+
+test_port1 := fn(): bool {
+	memory.outb(CONTROLLER_PORT, 0xAB)
+	loop if has_input(get_info()) break
+	input := get_input()
+	return input == 0x0
+}
+
+test_port2 := fn(): bool {
+	memory.outb(CONTROLLER_PORT, 0xA9)
+	loop if has_input(get_info()) break
+	input := get_input()
+	return input == 0x0
+}
+
+get_config_byte := fn(): u8 {
+	memory.outb(CONTROLLER_PORT, 0x20)
+	loop if has_input(get_info()) break
+	return get_input()
+}
+
+Info := struct {d: u8}
+
+$get_info := fn(): Info return .(memory.inb(CONTROLLER_PORT))
+//inline when can
+has_input := fn(info: Info): bool return bit0(info.d)
+can_send := fn(info: Info): bool return bit1(info.d) == false
+timed_out := fn(info: Info): bool return bit6(info.d)
+check_parity := fn(info: Info): bool return bit7(info.d)
+get_port := fn(info: Info): ^Port {
+	if bit5(info.d) {
+		return &port2
+	} else {
+		return &port1
+	}
+}
+
+port2_ptr := &port2
+send_byte := fn(port: ^Port, byte: u8): void {
+	if port == port2_ptr {
+		memory.outb(CONTROLLER_PORT, 0xD4)
+	}
+	loop if can_send(get_info()) break
+	memory.outb(DATA_PORT, byte)
+}
+
+$get_input := fn(): u8 return memory.inb(DATA_PORT)
+$write_out := fn(data: u8): void memory.outb(DATA_PORT, data)
+
+flush_input := fn(): void {
+	loop if has_input(get_info()) == false break else get_info()
+}
+
+init := fn(): void {
+	disable_port1()
+	disable_port2()
+	//Disables ports to make sure that they won't interfere with the setup process.
+
+	flush_input()
+
+	enable_port2()
+	port2.exists = bit5(@inline(get_config_byte)) == false
+	disable_port2()
+
+	flush_input()
+
+	port1.exists = test_port1()
+
+	if port2.exists {
+		port2.exists = test_port2()
+	}
+
+	if (port1.exists | port2.exists) == false {
+		log.error("No ports detected! No input will be processed! Cannot handle this!")
+	}
+
+	if port1.exists {
+		log.info("Port 1 exists.")
+		enable_port1()
+	}
+	if port2.exists {
+		log.info("Port 2 exists.")
+		enable_port2()
+	}
+}

sysdata/programs/ps2_driver_retired/src/main.hb

@@ -0,0 +1,150 @@
+.{memory, log, buffer, string} := @use("stn");
+.{MouseEvent} := @use("lib:intouch").events;
+.{bit0, bit1, bit2, bit3, bit4} := @use("bits.hb")
+devices := @use("devices.hb")
+controller := @use("controller.hb");
+.{Info, Port} := controller
+mouse := @use("mouse.hb")
+
+mouse_buffer := 0
+keyboard_buffer := 0
+info := Info.(0)
+
+send_command := fn(port: ^Port, byte: u8): void {
+	tries := 3
+	loop if tries == 0 break else {
+		controller.send_byte(port, byte)
+		loop {
+			info = controller.get_info()
+			if controller.has_input(info) == false {
+				continue
+			}
+			input := controller.get_input()
+			if controller.get_port(info) != port {
+				if check_complete(port) == false {
+					port.packet[port.packet_length] = input
+					port.packet_length += 1
+				}
+				continue
+			}
+			if input == 0xFA {
+				return
+			} else {
+				break
+			}
+		}
+		tries -= 1
+	}
+}
+
+enable_streaming := fn(port: ^Port): void {
+	@inline(send_command, port, 0xF4)
+}
+
+process := fn(port: ^controller.Port): void {
+	if port.device.value < devices.MOUSE_5_BUTTON.value {
+		event := MouseEvent.(0, 0, false, false, false)
+
+		event.left = bit0(port.packet[0])
+		event.right = bit1(port.packet[0])
+		event.middle = bit2(port.packet[0])
+
+		event.x_change = @intcast(port.packet[1])
+		event.y_change = @intcast(port.packet[2])
+
+		buffer.write(MouseEvent, mouse_buffer, &event)
+	} else if port.device == devices.MOUSE_INIT_1 {
+		port.device.value = port.packet[0]
+		if port.device != devices.MOUSE_SCROLLWHEEL {
+			enable_streaming(port)
+			return
+		}
+		port.device = devices.MOUSE_INIT_2
+	} else if port.device == devices.MOUSE_INIT_2 {
+		port.device.value = port.packet[0]
+	} else if port.device == devices.NO_DEVICE {
+		if port.packet_length == 1 {
+			port.device.value = port.packet[0]
+			enable_streaming(port)
+			//TODO: Upgrade mouse.
+		} else {
+			port.device.value = port.packet[1] | port.packet[0] << 8
+			enable_streaming(port)
+		}
+		log.info("Identified device!")
+		log.print(port.device.value, .{radix: 16})
+	} else {
+		log.info("KEY PRESSED")
+	}
+}
+
+check_complete := fn(port: ^controller.Port): bool {
+	last_value := port.packet[port.packet_length - 1]
+	if port.device == devices.NO_DEVICE {
+		if last_value == 0 | last_value == 3 | last_value == 4 {
+			return true
+		} else if port.packet_length == 2 {
+			return true
+		}
+	} else if port.device == devices.MOUSE_3_BUTTON {
+		if port.packet_length == 3 return true
+	} else if port.device == devices.MOUSE_SCROLLWHEEL | port.device == devices.MOUSE_5_BUTTON {
+		if port.packet_length == 4 return true
+	} else {
+		if port.packet[0] == 0xE1 {
+			if port.packet_length == 6 {
+				return true
+			}
+		} else if port.packet[0] != 0xE0 {
+			return true
+		} else if port.packet_length == 2 & port.packet[1] != 0x2A & port.packet[1] != 0xB7 {
+			return true
+		} else if port.packet_length == 4 {
+			return true
+		}
+	}
+	return false
+}
+
+main := fn(): void {
+	mouse_buffer = buffer.create("PS/2 Mouse")
+
+	controller.init()
+
+	if controller.port1.exists {
+		//log.info("Port 1 exists.")
+		controller.send_byte(@bitcast(0), 0xF4)
+	}
+	if controller.port2.exists {
+		//controller.send_byte(&controller.port2, 0xF4)
+	}
+
+	loop {
+		info = controller.get_info()
+
+		if controller.timed_out(info) {
+			log.error("Timeout error! Cannot handle these!")
+		}
+		if controller.check_parity(info) {
+			log.error("Parity error! Cannot handle these!")
+		}
+		/*
+		if controller.has_input(info) {
+			port := controller.get_port(info)
+			if port.packet_length > 0 & check_complete(port) {
+				process(port)
+			}
+			input := controller.get_input()
+			/*if input == 0xAA & port.can_hot_plug {
+				port.device = devices.NO_DEVICE
+				controller.send_byte(port, 0xF4)
+			}*/
+			port.packet[port.packet_length] = input
+			port.packet_length += 1
+			if check_complete(port) {
+				process(port)
+				port.packet_length = 0
+			}
+		}*/
+	}
+}

sysdata/programs/ps2_driver_retired/src/port.hb

@@ -0,0 +1,21 @@
+.{DeviceID, NO_DEVICE} := @use("devices.hb")
+
+State := struct {s: u8}
+$Recive := State.(0)
+$Reboot := State.(1)
+
+Port := packed struct {
+	exists: bool,
+	device: DeviceID,
+	packet: [8]u8,
+	packet_length: u8,
+	can_hot_plug: bool,
+}
+
+$PORT_AT_STARTUP := Port.(
+	true,
+	NO_DEVICE,
+	.[0, 0, 0, 0, 0, 0, 0, 0],
+	0,
+	true,
+)

sysdata/programs/rtc_driver/src/main.hb

@@ -1,12 +1,89 @@
 stn := @use("stn");
 .{sleep, log, memory} := stn
 
-main := fn(): int {
-	loop {
-		log.info("BEFORE")
-		sleep.sleep_until_interrupt(8)
-		log.info("AFTER")
+$decode_bcd := fn(value: u8): u8 {
+	return (value & 0xF) + ((value & 0xF0) >> 4) * 10
+}
+
+read_register := fn(register: u8): u8 {
+	memory.outb(0x70, register | 0x80)
+	return memory.inb(0x71)
+}
+
+$MONTH_TABLE := uint.[
+	267840000,
+	0,
+	267840000,
+	259200000,
+	267840000,
+	259200000,
+	267840000,
+	267840000,
+	259200000,
+	267840000,
+	259200000,
+	267840000,
+]
+
+fetch_time := fn(): uint {
+	sleep.disable_interrupts()
+
+	format := read_register(0xB)
+
+	second := read_register(0x0)
+	minute := read_register(0x2)
+	hour := read_register(0x4)
+	week := read_register(0x6)
+	day := read_register(0x7)
+	month := read_register(0x8)
+	year := read_register(0x9)
+
+	century := @as(u8, 0x20)
+	if (format & 4) == 4 {
+		century = 20
+	}
+	if read_register(0x6C) != 0 {
+		century = read_register(0x32)
 	}
 
-	return 0
+	sleep.enable_interrupts()
+
+	if (format & 4) != 4 {
+		second = decode_bcd(second)
+		minute = decode_bcd(minute)
+		hour = decode_bcd(hour & 0b1111111)
+		day = decode_bcd(day)
+		month = decode_bcd(month)
+		year = decode_bcd(year)
+		century = decode_bcd(century)
+	}
+
+	if (format & 2) != 2 & (hour & 0x80) == 0x80 {
+		hour = hour & 0b1111111 + 12
+	}
+
+	log.printf("{}-{}-{} at {}:{}:{}", .(@as(u16, year) + @as(u16, century) * 100, month, day, hour, minute, second), .{})
+
+	delta_epoch := @as(uint, year) + @as(uint, century) * 100 - 1970
+	result := (second + (minute + @as(uint, hour) * 60) * 60) * 100 + delta_epoch * 3155692608
+	test_month := 1
+	loop if test_month == month break else {
+		if test_month == 2 {
+			if year % 4 == 0 & year % 100 != 0 | year % 400 == 0 {
+				result += 250560000
+			} else {
+				result += 241920000
+			}
+		} else {
+			result += MONTH_TABLE[test_month]
+		}
+		test_month += 1
+	}
+	result += @as(uint, day - 1) * 8640000
+
+	return result / 100
+}
+
+main := fn(): void {
+	log.print(fetch_time(), .{})
 }

sysdata/programs/rtc_driver/src/main_legacy.hb

@@ -0,0 +1,48 @@
+stn := @use("stn");
+.{sleep, log, memory} := stn
+
+microseconds := @as(u32, 0)
+seconds := @as(uint, 0)
+
+padding := fn(): void {
+	iter := 0
+	loop if iter == 0xFFFF break else iter += 1
+}
+
+read_register := fn(register: u8): u8 {
+	memory.outb(0x70, register)
+	padding()
+	return memory.inb(0x71)
+}
+
+write_register := fn(register: u8, value: u8): void {
+	memory.outb(0x70, register)
+	padding()
+	memory.outb(0x71, value)
+}
+
+main := fn(): void {
+	sleep.disable_interrupts()
+
+	reg_a := read_register(0x8A)
+	write_register(0x8A, 3 | 0xF0 & reg_a)
+
+	log.print(read_register(0x86), log.fmt.FormatOptions.(2, 10, log.LogLevel.Info))
+
+	reg_b := read_register(0x8B)
+	write_register(0xB, 0x40 | reg_b)
+
+	sleep.enable_interrupts()
+
+	loop {
+		sleep.sleep_until_interrupt(8)
+		read_register(0xC)
+
+		microseconds += 122
+		if microseconds >= 1000000 {
+			microseconds -= 1000000
+			seconds += 1
+		}
+		log.print(seconds, log.fmt.FormatOptions.(2, 10, log.LogLevel.Info))
+	}
+}

sysdata/programs/test/src/tests/stn/assets/hello_world_and_spin.hb

@@ -0,0 +1,7 @@
+.{log, sleep} := @use("stn")
+
+main := fn(): void {
+	log.info("Hello, World!")
+	// fake interrupt, sleep forever
+	sleep.sleep_until_interrupt(100)
+}

sysdata/system_config.toml

@@ -50,8 +50,11 @@ resolution = "1024x768x24"
 # [boot.limine.ableos.modules.angels_halo]
 # path = "boot:///angels_halo.hbf"
 
-[boot.limine.ableos.modules.test]
-path = "boot:///test.hbf"
+# [boot.limine.ableos.modules.test]
+# path = "boot:///test.hbf"
 
 # [boot.limine.ableos.modules.vfsaur]
 # path = "boot:///vfsaur.hbf"
+
+[boot.limine.ableos.modules.rtc_driver]
+path = "boot:///rtc_driver.hbf"