From: HimbeerserverDE <himbeerserverde@gmail.com>
Date: Sun, 11 Sep 2022 18:10:00 +0000 (+0200)
Subject: Welcome message only
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=ec5486e46ec9b23aa304f1fba95c02f7ff7e6401;p=loadnothing.git

Welcome message only
---

diff --git a/stage1/boot.asm b/stage1/boot.asm
index 631f2b4..9201cf8 100644
--- a/stage1/boot.asm
+++ b/stage1/boot.asm
@@ -33,105 +33,8 @@ print_bytes_si_loop:
 
 	ret
 
-; APM is not supported
-apm_error:
-	mov ch, 9           ; Our string is 9 characters long
-	mov si, apm_err
-	call print_bytes_si
-
-	jmp $               ; Infinite loop
-
-; Check APM support
-apm_chk:
-	mov ah, 0x53     ; This is an APM command
-	mov al, 0x00     ; APM: Installation Check
-	mov bx, 0x0000   ; Device ID (0 is APM BIOS)
-	int 0x15         ; Call
-
-	jc apm_error ; Carry flag is set if there was an error
-
-	cmp ah, 1        ; APM major version must be at least one
-	jb apm_error
-
-	cmp al, 1        ; APM minor version must be at least one
-	jb apm_error
-
-	ret
-
-
-; Disconnect from any APM interface
-apm_disco:
-	mov ah, 0x53           ; This is an APM command
-	mov al, 0x04           ; APM: Disconnect
-	mov bx, 0x0000         ; Device ID (0 is APM BIOS)
-	int 0x15               ; Call
-
-	jc .apm_disco_error    ; Carry flag is set if there was an error
-	jmp .apm_disco_success
-
-; Disconnecting any APM interface failed
-.apm_disco_error:
-	cmp ah, 0x03  ; Error code for no interface connected
-	jne apm_error
-
-; No interface are connected now
-.apm_disco_success:
-	ret
-
-; Connect to an APM interface
-apm_connect:
-	mov ah, 0x53   ; This is an APM command
-	mov bx, 0x0000 ; Device ID (0 is APM BIOS)
-	int 0x15       ; Call
-
-	jc apm_error ; Carry flag is set if there was an error
-	ret
-
-; Set the APM Driver Version to 1.1
-apm_drv_init:
-	mov ah, 0x53   ; This is an APM command
-	mov al, 0x0e   ; APM: Set Driver Supported Version
-	mov bx, 0x0000 ; Device ID (0 is APM BIOS)
-	mov ch, 1      ; APM Driver Major Version Number
-	mov cl, 1      ; APM Driver Minor Version Number
-	int 0x15       ; Call
-
-	jc apm_error ; Carry flag is set if there was an error
-	ret
-
-; Enable APM Power Management
-apm_mgmt_on:
-	mov ah, 0x53   ; This is an APM command
-	mov al, 0x08   ; APM: Change power management state
-	mov bx, 0x0001 ; on all devices
-	mov cx, 0x0001 ; to on
-	int 0x15       ; Call
-
-	jc apm_error   ; Carry flag is set if there was an error
-	ret
-
-; Power down the system
-apm_power_off:
-	mov ah, 0x53   ; This is an APM command
-	mov al, 0x07   ; APM: Set power state
-	mov bx, 0x0001 ; on all devices
-	mov cx, 0x0003 ; to off
-	int 0x15       ; Call
-
-	jc apm_error   ; Carry flag is set if there was an error
-	ret
-
 ; Main
 boot:
-	call apm_chk        ; Is APM supported?
-	call apm_disco      ; Disconnect from any APM interface
-
-	mov al, 0x01        ; Interface to connect to: Real Mode
-	call apm_connect    ; Connect to APM interface
-
-	call apm_drv_init   ; Set the APM Driver Version to 1.1
-	call apm_mgmt_on    ; Enable Power Management
-
 	; Clear the screen
 	mov ah, 0x06
 	mov al, 0x00
@@ -149,22 +52,12 @@ boot:
 	mov dl, 0           ; Column
 	int 0x10
 
-	mov ch, 5           ; Our string is 5 characters long
+	mov ch, 33          ; Our string is 33 characters long
 	mov si, hello
 	call print_bytes_si
 
-	mov ch, 29          ; Our string is 29 characters long
-	mov si, paktc       ; paktc: Press any key to continue
-	call print_bytes_si
-
-	mov ah, 0x00        ; Keyboard: Read key press
-	int 0x16            ; Call
-
-	call apm_power_off
 	jmp $               ; Infinite loop
 
-hello db 'foo', 13, 10                   ; \r\n
-apm_err db 'APM Error'
-paktc db 'Press any key to continue... '
+hello db 'Welcome to loadnothing stage 1!', 13, 10                   ; \r\n
 
 times (446 - ($ - $$)) db 0x00