;
; Ok, this is the sceleton that MENUET 0.01 understands.
; Do not change the header bits for now. Compile with nasm.
;
include '..\..\..\macros.inc'
use32
org 0x0
db 'MENUET01' ; header
dd 0x01 ; header version
dd START ; entry point
dd I_END ; image size
dd 0x1000 ; required memory
dd 0x1000 ; esp
dd 0x0 , 0x0 ; I_Param , I_Path
MIDI_PORT = 0x330
midisp: dw MIDI_PORT + 1
mididp: dw MIDI_PORT
START:
mov dx, word[midisp]
mov cx, word[mididp]
mcall 46, 0
test eax, eax
jne exit
red:
call draw_window
still:
mov eax, 10 ; redraw ?
mcall
cmp eax, 1
jz red
cmp eax, 3
jnz still
;button:
mov eax, 17
mcall
cmp al, 0
jnz still
cmp ah, 1
jz exit
cmp ah, 2
jz .play_note
; reset midi device
call midi_reset
cmp eax, 0 ; check error code
jz still
call printerror
jmp still
.play_note:
mov eax, 50
.nn:
mov ebx, 100
call noteout
pusha
mov eax, 5
mov ebx, 8
mcall
popa
mov ebx, 0
; call noteout
add eax, 3
mov ebx, 100
call noteout
pusha
mov eax, 5
mov ebx, 8
mcall
popa
mov ebx, 0
; call noteout
add eax, 4
inc eax
cmp eax, 90
jbe .nn
jmp still
exit:
mcall -1
draw_window:
pusha
mov eax, 12 ; tell os about redraw
mov ebx, 1
mcall
mov eax, 0 ; define and draw window
mov ebx, 20*65536+250
mov ecx, 20*65536+120
mov edx, 0x14ffffff
mov edi, title
mcall
mov eax, 8
mov ebx, 10*65536+200 ; button start x & size
mov ecx, 40 *65536+17 ; button start y & size
mov edx, 2 ; button number
mov esi, 0x4060b0 ; button color
mcall
mov ecx, 60 *65536+17 ; button start y & size
mov edx, 3 ; button number
mcall
mov eax, 4
mov ebx, 25*65536+45
mov ecx, dword 0xffffff
mov edx, buttont
mov esi, buttontlen-buttont
mcall
mov ebx, 25*65536+65
mov edx, buttont2
mov esi, buttontlen2-buttont2
mcall
mov eax, 12 ; tell os about redraw end
mov ebx, 2
mcall
popa
ret
noteout:
pusha
push ebx
push eax
mov ecx, 0x9f
call midi_output_byte
pop ecx
call midi_output_byte
pop ecx
call midi_output_byte
cmp eax, 0
jz @f
call printerror
@@:
popa
ret
printerror:
mov eax, 4
mov ebx, 15*65536+85
mov ecx, 0x000000
mov edx, error1
mov esi, errorlen1-error1
mcall
mov eax, 4
mov ebx, 15*65536+95
mov ecx, 0x000000
mov edx, error2
mov esi, errorlen2-error2
mcall
ret
; MPU401 interface
midi_reset:
@@:
; reset device
call is_output
test al, al
jnz @b
mov dx, word [midisp]
mov al, 0xff
out dx, al
@@:
mov dx, word [midisp]
mov al, 0xff
out dx, al
call is_input
test al, al
jnz @b
call get_mpu_in
cmp al, 0xfe
jnz @b
@@:
call is_output
test al, al
jnz @b
mov dx, word [midisp]
mov al, 0x3f
out dx, al
ret
midi_output_byte:
; output byte
@@:
call get_mpu_in
call is_output
test al, al
jnz @b
mov al, cl
call put_mpu_out
ret
is_input:
push edx
mov dx, word [midisp]
in al, dx
and al, 0x80
pop edx
ret
is_output:
push edx
mov dx, word [midisp]
in al, dx
and al, 0x40
pop edx
ret
get_mpu_in:
push edx
mov dx, word [mididp]
in al, dx
pop edx
ret
put_mpu_out:
push edx
mov dx, word [mididp]
out dx, al
pop edx
ret
; DATA AREA
title db 'MIDI TEST',0
buttont:
db 'PLAY A FEW NOTES'
buttontlen:
buttont2:
db 'RESET MIDI DEVICE'
buttontlen2:
error1:
db 'NO BASE DEFINED FOR MPU-401'
errorlen1:
error2:
db 'USE SETUP AND RESET MIDI DEVICE.'
errorlen2:
base db 0x0
I_END: