ZeusWPI/ass_messages
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make indentation a bit more consistent

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Tibo 2021-10-07 18:18:29 +02:00
parent 03be68cfb7
commit 331da168b4
1 changed files with 10 additions and 10 deletions
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20
messages.asm
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@ -6,7 +6,7 @@ HEIGHT equ 0x18 ; 24
VIDEO_MODE equ 0x3 ; 80x25 screen, text mode VIDEO_MODE equ 0x3 ; 80x25 screen, text mode
PIT_MODECOMMAND_PORT equ 0x43 ; programmable interval timer mode/command port (used for speaker) PIT_MODECOMMAND_PORT equ 0x43 ; programmable interval timer mode/command port (used for speaker)
PIT_CH2_DATA_PORT equ 0x42 ; PIT channel 2 data port PIT_CH2_DATA_PORT equ 0x42 ; PIT channel 2 data port
;; see http://www.ctyme.com/intr/int-10.htm for interrupts ;; see http://www.ctyme.com/intr/int-10.htm for interrupts
@ -36,9 +36,9 @@ mov sp, 0x2000 ; initialise stack pointer
;; 1 1 8 ;; 1 1 8
;; initialise serial port ;; initialise serial port
mov ah, 0x0 ; initialise UART mov ah, 0x0 ; initialise UART
mov al, 0b111_00_0_11 ; baud 9600, no parity, 1 stop bit, 8 data bits mov al, 0b111_00_0_11 ; baud 9600, no parity, 1 stop bit, 8 data bits
mov dx, 0x0 ; COM1 mov dx, 0x0 ; COM1
int 0x14 int 0x14
;; Use color mode ;; Use color mode
@ -159,7 +159,7 @@ newline:
beep: beep:
call read_duration ; get duration from keyboard (in al) call read_duration ; get duration from keyboard (in al)
mov ah, 0 mov ah, 0
push ax ; store on stack push ax ; store on stack
;; move 182 (0b10 11 011 0) into al ;; move 182 (0b10 11 011 0) into al
;; bit 7-6 = channel select (2, PC speaker) ;; bit 7-6 = channel select (2, PC speaker)
@ -185,7 +185,7 @@ beep:
or al, 00000011b ; Set bits 1 and 0 (enable speaker, input = channel 2) or al, 00000011b ; Set bits 1 and 0 (enable speaker, input = channel 2)
out 0x61, al ; Send new value out 0x61, al ; Send new value
;; mov bx, 50000 ; Pause for duration of note. ;; mov bx, 50000 ; Pause for duration of note.
;; multiply duration by 3125 ;; multiply duration by 3125
pop bx ; pull duration value from stack into bx pop bx ; pull duration value from stack into bx
@ -200,10 +200,10 @@ beep:
mov ecx, 65535 mov ecx, 65535
.pause2: .pause2:
dec cx ; count down dec cx ; count down
jne .pause2 ; if not zero keep counting down jne .pause2 ; if not zero keep counting down
dec bx ; decrement duration counter dec bx ; decrement duration counter
jne .pause1 ; keep doing that until it is 0 jne .pause1 ; keep doing that until it is 0
in al, 0x61 ; Preserve previous value in al, 0x61 ; Preserve previous value
and al, 11111100b ; Clear bits 1 and 0 (disable speaker, clear channel select) and al, 11111100b ; Clear bits 1 and 0 (disable speaker, clear channel select)
@ -220,10 +220,10 @@ beep:
;; - dx ;; - dx
nonewline: nonewline:
;; Write character ;; Write character
mov ah, 0x09 ; write character with attribute mov ah, 0x09 ; write character with attribute
mov bh, 0x00 ; page number mov bh, 0x00 ; page number
mov bl, [color_mode] ; BIOS colour code mov bl, [color_mode] ; BIOS colour code
mov cx, 0x01 ; amount of times to print character mov cx, 0x01 ; amount of times to print character
int 0x10 int 0x10
;; Get current cursor position ;; Get current cursor position