diff options
Diffstat (limited to 'power.asm')
| -rw-r--r-- | power.asm | 56 |
1 files changed, 56 insertions, 0 deletions
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 |