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distinguishing zero-byte write from full-block write

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minjaesong
2023-06-15 23:30:57 +09:00
parent 445c1a873f
commit 974be9dda6
4 changed files with 46 additions and 27 deletions
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terranmon.txt
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@@ -110,15 +110,17 @@ MMIO
4080..4083 RO: 8-bit status code for connected device
4084..4091 RO: Block transfer status
0b nnnnnnnn a000 mmmm
0b nnnnnnnn a00z mmmm
n-read: size of the block from the other device, LSB (4096-full block size is zero)
m-read: size of the block from the other device, MSB (4096-full block size is zero)
a-read: if the other device hasNext (doYouHaveNext), false if device not present
z-read: set if the size is actually 0 instead of 4096
n-write: size of the block I'm sending, LSB (4096-full block size is zero)
m-write: size of the block I'm sending, MSB (4096-full block size is zero)
a-write: if there's more to send (hasNext)
z-write: set if the size is actually 0 instead of 4096
4092..4095 RW: Block transfer control for Port 1 through 4
0b 00ms abcd