; assume es:data
@next_block:
mov cx,100h
mov di, offset buff
call read_rom_part
mov ax,7140h
cld
@loop:
repne scasw
jcxz @next_block
cmp byte ptr es:[di],57h
jnz @loop
add di,1Ch
mov dx,es:[di]
mov cl,dl
shr cl,7
or dl,80h
shr dh,4
or dh,8
shl dh,1
dec dh,cl
mov cl,dh
movzx eax,dl
ror eax,cl
mov al,57h
xchg al,ah
push ax ;r5
mov ax,300h
mov al,es:[di+2]
push ax ;r4
mov dx,es:[di+0Ah]
mov cl,dl
shr cl,7
or dl,80h
shr dh,4
or dh,8
shl dh,1
dec dh,cl
mov cl,dh
movzx eax,dl
ror eax,cl
mov al,es:[di+0Ah+2]
xchg al,ah
push ax ;r2
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