From 3155f0ec7fb015225c6ae42f782b8c25f2d79f88 Mon Sep 17 00:00:00 2001
From: David <dbphillipsnz@gmail.com>
Date: Fri, 19 Jul 2013 11:47:17 +1200
Subject: Committed

---
 power.asm | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 power.asm

(limited to 'power.asm')

diff --git a/power.asm b/power.asm
new file mode 100644
index 0000000..dd03bde
--- /dev/null
+++ b/power.asm
@@ -0,0 +1,56 @@
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;
+;;  name: jaspos_power_connect
+;;  @param	none
+;;  @return	none
+;;  Connects the APM interface or displays an APM
+;;  error code on failure
+;;
+jaspos_power_connect:
+	push	power_msgConnecting			; Display a message saying that we're connecting the interface
+	call	jaspos_monitor_dispstring	;
+	mov		ax, 0x5301					; ax = 0x5301 - connect interface subfunction
+	xor		bx, bx						; zero-out bx
+	int		0x15						; Int 15.5301 - connect APM interface
+	jc		.error						; catch errors from interrupt
+.quit:
+	ret
+
+.error:
+	push	msgFailedWithCode			; Display a message explaining that it failed
+	call	jaspos_monitor_dispstring	;
+	mov		[free_ram+4], byte 0		; Ensure there'll be a null-terminator
+	push	free_ram + 4				; arg1 = buffer
+	push	ax							; arg2 = decimal number
+	call	jaspos_strutils_d2str		; Convert decimal to string
+	push	free_ram					; Load address on NumberBuffer for printing
+	call	jaspos_monitor_dispstring	; Print NumberBuffer
+	jmp		.quit						; Jump to .quit for some POPping and then return
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;
+;;  name: jaspos_power_shutdown
+;;  @param	none
+;;  @return	none
+;;  Powers the computer off using the (already
+;;  connected) APM interface
+;;
+jaspos_power_shutdown:
+	mov		ax, 0x5307					; ax = 5307 - Set power state
+	mov		bx, 0x0001					; bx = 0001 - Device: BIOS
+	mov		cx, 0x0003					; cx = 0003 - power state: off
+	int		0x15						; Int 15.5307 - set power state using APM interface
+	jc		.error						; Catch errors
+	ret
+.error:
+	push	msgFailedWithCode			; Warn user of error
+	call	jaspos_monitor_dispstring	;
+	mov		[free_ram+5], byte 0
+	push	free_ram + 4
+	push	ax
+	call	jaspos_strutils_d2str		; Convert AH to string in NumberBuffer
+	push	free_ram					; Print NumberBuffer
+	call	jaspos_monitor_dispstring	;
+	jmp		jaspos.panic
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
\ No newline at end of file
-- 
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