295 lines
6.0 KiB
Plaintext
295 lines
6.0 KiB
Plaintext
; **
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; ** 53C710 SCRIPTS for Progressive Peripherals, Inc. Zeus SCSI-2 driver
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; **
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; **
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; ** Absolute definitions
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; **
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ABSOLUTE ds_Device = 0x00
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ABSOLUTE ds_Identify = ds_Device + 4
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ABSOLUTE ds_Cmd = ds_Identify + 8
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ABSOLUTE ds_Status = ds_Cmd + 8
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ABSOLUTE ds_Msg = ds_Status + 8
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ABSOLUTE ds_MsgOut = ds_Msg + 8
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ABSOLUTE ds_MsgIn = ds_MsgOut + 8
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ABSOLUTE ds_Data = ds_MsgIn + 8
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;ABSOLUTE xx = 0x00ff00
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;ABSOLUTE xx = 0x00ff01
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;ABSOLUTE xx = 0x00ff02
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;ABSOLUTE xx = 0x00ff03
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;ABSOLUTE xx = 0x00ff04
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;ABSOLUTE xx = 0x00ff05
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;ABSOLUTE xx = 0x00ff06
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;ABSOLUTE xx = 0x00ff07
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;ABSOLUTE xx = 0x00ff08
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;ABSOLUTE xx = 0x00ff09
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;ABSOLUTE xx = 0x00ff10
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;ABSOLUTE xx = 0x00ff11
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;ABSOLUTE xx = 0x00ff12
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;ABSOLUTE xx = 0x00ff13
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;ABSOLUTE xx = 0x00ff14
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;ABSOLUTE xx = 0x00ff15
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;ABSOLUTE xx = 0x00ff16
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;ABSOLUTE xx = 0x00ff17
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;ABSOLUTE xx = 0x00ff18
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;ABSOLUTE xx = 0x00ff19
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;ABSOLUTE xx = 0x00ff20
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;ABSOLUTE xx = 0x00ff21
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;ABSOLUTE xx = 0x00ff22
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;ABSOLUTE xx = 0x00ff23
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;ABSOLUTE xx = 0x00ff24
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;ABSOLUTE xx = 0x00ff25
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;ABSOLUTE xx = 0x00ff26
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;ABSOLUTE xx = 0x00fffb
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;ABSOLUTE xx = 0x00fffc
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;ABSOLUTE xx = 0x00fffd
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;ABSOLUTE xx = 0x00fffe
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ENTRY msgout, cmd, status, msgin, dataout, datain
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PROC scripts:
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; **
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; ** Initial starting point - select device with ATN
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; **
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SELECT ATN FROM ds_Device, REL(x288)
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JUMP REL(status), WHEN Status
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MOVE CTEST7 | 0x10 TO CTEST7 ; ** disable selection timeout?
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; **
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; ** Should be message out phase [older devices won't respond to Select with ATN]
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; **
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msgout:
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JUMP REL(cmd), IF Cmd ; **FIX** target wants command directly
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INT 0x0000ff01, IF NOT Msg_Out ; ** expected message out
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MOVE SCRATCH1 | 0x00 TO SFBR
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JUMP REL(x78), IF 0x00
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; **
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; ** Scratch1 != 00 means we have a special message to send to the target
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; ** (the synchronous negotiation message)
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x30:
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SET ATN
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MOVE FROM ds_MsgOut, WHEN Msg_Out ; ** send message
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x40:
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JUMP REL(status), WHEN Status
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MOVE FROM ds_MsgIn, WHEN Msg_In ; ** receive response
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JUMP REL(status), WHEN Status
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JUMP REL(x30), IF Msg_Out
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JUMP REL(status), IF Status
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JUMP REL(x180), IF Msg_In
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JUMP REL(cmd)
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; **
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; ** send identify message
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; **
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x78:
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MOVE FROM ds_Identify, WHEN Msg_Out
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JUMP REL(status), WHEN Status
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JUMP REL(x78), IF Msg_Out
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JUMP REL(status), IF Status
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JUMP REL(x180), IF Msg_In
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; **
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; ** Should be in command phase
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; **
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cmd:
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INT 0x0000ff02, IF NOT Cmd ; ** expected command
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MOVE FROM ds_Cmd, WHEN Cmd
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JUMP REL(x1d8), WHEN Msg_In
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JUMP REL(status), IF Status
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JUMP REL(datain), IF Data_In
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JUMP REL(dataout), IF Data_Out
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INT 0x0000ff03 ; ** invalid phase after command
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; **
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; ** Should be in status phase
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; **
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status:
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MOVE FROM ds_Status, WHEN Status
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MOVE SIDL | 0x00 TO SFBR
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MOVE SFBR | 0x00 TO SCRATCH0 ; ** save status in SCRATCH0
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; **
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; ** Should be in message in phase
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; **
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msgin:
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INT 0x0000ff04, WHEN NOT Msg_In ; ** expected message in
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MOVE FROM ds_Msg, WHEN Msg_In
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;JUMP REL(msgin), IF 0x07 ; ** assume REJECT is for sync neg
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INT 0x0000ff26, IF NOT 0x00 ; ** message byte != complete
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CLEAR ACK
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WAIT DISCONNECT
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MOVE CTEST7 & 0xef TO CTEST7
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MOVE SCRATCH0 | 0x00 TO SFBR ; ** check status byte
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INT 0x0000fffc, IF 0x02 ; ** -> Check Condition
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INT 0x0000fffb, IF 0x08 ; ** -> Busy
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INT 0x0000fffd, IF 0x18 ; ** -> ??
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INT 0x0000fffe, IF NOT 0x00 ; ** -> not good status
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INT 0x0000ff00 ; ** -> normal completion
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; **
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; ** Should be in data out phase
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; **
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dataout:
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MOVE FROM ds_Data, WHEN Data_Out
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JUMP REL(chain_out), WHEN Data_Out
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; **
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; ** Check phase after data transfer
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; **
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x158:
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JUMP REL(status), WHEN Status
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JUMP REL(x230), IF Msg_In
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INT 0x0000ff05 ; ** unexpected phase after data
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; **
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; ** Should be data in phase
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; **
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datain:
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MOVE FROM ds_Data, WHEN Data_In
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JUMP REL(chain_in), WHEN Data_In
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JUMP REL(x158)
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; **
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; ** Got message in phase after sending message out
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;
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x180:
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MOVE FROM ds_Msg, WHEN Msg_In
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JUMP REL(x1a8), IF 0x01 ; ** -> Extended message
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INT 0x0000ff08, IF 0x02 ; ** -> Save Data Pointer
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JUMP REL(x1c0), IF 0x04 ; ** -> Disconnect
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INT 0x0000ff06 ; ** Unexpected message
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; **
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; ** Extended message
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; **
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x1a8:
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CLEAR ACK
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MOVE FROM ds_MsgIn, WHEN Msg_In ; ** input message
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INT 0x0000ff07 ; ** and interrupt
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; **
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; ** Disconnect message received
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; **
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x1c0:
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CLEAR ACK
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WAIT DISCONNECT
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INT 0x0000ff09
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; **
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; ** Message in after command
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; **
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x1d8:
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MOVE FROM ds_Msg, WHEN Msg_In ; ** get message byte
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JUMP REL(x200), IF 0x01 ; ** -> Extended Message
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INT 0x0000ff10, IF 0x02 ; ** -> Save Data Pointer
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JUMP REL(x218), IF 0x04 ; ** -> Disconnect
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INT 0x0000ff11 ; ** unexpected message
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; **
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; ** Extended message after command
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; **
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x200:
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CLEAR ACK
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MOVE FROM ds_MsgIn, WHEN Msg_In
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INT 0x0000ff12
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; **
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; ** Disconnect after command
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; **
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x218:
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CLEAR ACK
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WAIT DISCONNECT
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INT 0x0000ff13
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; **
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; ** Message in after data transfer
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; **
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x230:
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MOVE FROM ds_Msg, WHEN Msg_In ; ** Get message byte
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JUMP REL(x258), IF 0x01 ; ** -> Extended Message
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INT 0x0000ff14, IF 0x02 ; ** -> Save Data Pointers
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JUMP REL(x270), IF 0x04 ; ** -> Disconnected
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INT 0x0000ff15 ; ** Unexpected message
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; **
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; ** Extended message after data transfer
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; **
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x258:
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CLEAR ACK
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MOVE FROM ds_MsgIn, WHEN Msg_In
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INT 0x0000ff16
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; **
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; ** Disconnect after data transfer
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; **
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x270:
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CLEAR ACK
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WAIT DISCONNECT
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INT 0x0000ff17
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; **
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; ** Selection aborted
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; **
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x288:
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WAIT RESELECT REL (x2d0)
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INT 0x0000ff18, WHEN NOT Msg_In
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MOVE FROM ds_Msg, WHEN Msg_In
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INT 0x0000ff19, WHEN Data_In
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INT 0x0000ff20, IF Data_Out
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INT 0x0000ff21, IF Msg_In
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INT 0x0000ff22, IF Status
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INT 0x0000ff23, IF Msg_Out
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INT 0x0000ff24
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x2d0:
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INT 0x0000ff25
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; **
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; ** DMA chaining
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; **
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chain_in:
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MOVE DSA0 + 8 TO SFBR
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JUMP REL(chain_in1), IF NOT 00, AND MASK 0x07
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MOVE DSA1 + 1 TO DSA1
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chain_in1:
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MOVE SFBR TO DSA0
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MOVE FROM ds_Data, WHEN Data_In
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JUMP REL(chain_in), WHEN Data_In
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INT 0x0000ff27 ; ** DMA chain transfer complete
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chain_out:
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MOVE DSA0 + 8 TO SFBR
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JUMP REL(chain_out1), IF NOT 00, AND MASK 0x07
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MOVE DSA1 + 1 TO DSA1
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chain_out1:
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MOVE SFBR TO DSA0
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MOVE FROM ds_Data, WHEN Data_Out
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JUMP REL(chain_out), WHEN Data_Out
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INT 0x0000ff27 ; ** DMA chain transfer complete
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