Who knows?
ZXNet echo conference «zxnet.soft»
Hello, Sergey!
08 Aug 99 22:39, Wladimir Bulchukey -> Sergey Kulkov:
WB> for (i=0; i<=14; CheckSum = CheckSum + (header.head[i] * 257) + i,
WB> i++); header.tr_head.tr_crc = CheckSum;
[big nonsense skipped]
A: (Michael Kondratyev 2:5030/362.1) Its (hobet file) structure:
The first 13 bytes are an exact copy of the hard header. Next two bytes of length
in sectors; because it is a multiple of 256, then the first is always zero, and the second is
number of sectors. And the last two bytes are the checksum. It is considered
it is simple - all the previous 15 bytes are summed up, the number is multiplied by
257 and add the sum_of_numbers_from_0_to_14 i.e. 105.
Procedure for Z80 Asm:
; to input de = header address
ld hl,0
ld b,15
m1: ld a,(de)
add a,l
ld l,a
jr nc,m2
inc h
m2:inc de
djnz m1
add a,h
ld h,a
ld c,105
add hl,bc ; hl = Hobeta sum
Hehe, it tastes better on Asma ;)
WBR, Jason.
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Hello, All!
Who knows how to contact the author of ZX-ASM 3.10? Tell me, please.
[I.ZX][DnB][ASM] Let's write again, Eugene!
[Explosive Team] 2:5080/57.12@FidoNet