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Fixed the new boot protocol: it works

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Problem was that I was only ever writing the first 32 blocks of each
read buffer.
This commit is contained in:
Elliot Nunn 2021-02-17 10:25:46 +08:00
parent 5a55190a83
commit c338a53575
1 changed files with 13 additions and 8 deletions
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21
ChainLoader.a
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@ -480,7 +480,7 @@ DrvrSockListener
eor.l D2,D3
swap D3
clr.b D3
bne.s DrvrTrashPacket
bne DrvrTrashPacket
btst #25,D2
bne.s DrvrDidReceiveWrite
@ -488,16 +488,21 @@ DrvrSockListener
DrvrDidReceiveRead
swap D2
and.w #32-1,D2 ; D2.W = block offset
move.l D2,D3
asl.w #8,D3
add.w D3,D3 ; D3.W = byte offset
and.l #32-1,D2 ; D2.L = block offset within 32blk chunk
move.l gMyDCE,A3
move.l 6+2(A3),A3 ; dCtlQHdr.qHead
move.l 6+2(A3),A3 ; A3 = dCtlQHdr.qHead
move.l $28(A3),D3 ; D3 = .ioActCount...
lsr.l #5,D3
lsr.l #4,D3 ; ...now in number of blocks
and.l #-32,D3 ; ...rounded down to a block chunk
add.l D2,D3 ; ...added back the received block
asl.l #8,D3
add.l D3,D3 ; ... = byte offset within buffer
move.l $20(A3),A3 ; .ioBuffer
add.w D3,A3 ; A3 = ioBuffer + thisPackOffset
add.l D3,A3 ; A3 = ioBuffer + offset
move.l #512,D3 ; D3 = size
jsr 2(A4) ; ReadRest (A3=dest, D3=length)
bne DrvrTrashPacket