Syntax:

• LAL C5

Description:

The LAL (load address and length) instruction captures the output of the AGU. The optional input C5 to the LAL instruction has the following function:

• C5: When C5 = 1, exceptions are conditioned by the top of the stack (see below for the exceptions that are conditioned by C5).

The relevant information for the MTQ, RTQ, RTM and MTR instructions are decoded from the latest value captured by the LAL. The encoding of this information is as follows:

Bit(s)	Mask	Description
[62]	40000000 00000000	QNOP: if set, MTQ and RTQ are ignored
[61]	20000000 00000000	DTQ-OFFSET: if set, RTQ becomes delayed
[60:48]	1FFF0000 00000000	burst length
[48:32]	00003F3F 00000000	communication offset (see below)
[39]	00000080 00000000	local duplication (see below)
[31:0]	00000000 FFFFFFFF	memory address

The communication offsets are:

• 0000 => local
• 0001 => send z-
• 0002 => send z-
• 0004 => send y-
• 0008 => send y+
• 0010 => send x-
• 0020 => send x+
• 0100 => receive z-
• 0200 => receive z+
• 0400 => receive y-
• 0800 => receive y+
• 1000 => receive x-
• 2000 => receive x+

Local duplication: When on, the data is sent to the local queue (in addition to the remote ones

Microcode Pattern:

Takes 1 cycles to execute.
    Example: LAL 1

	  
	 C5  MCC   STKC  FLW  IOC  AGU   ASEL 
	--------------------------------------
	  1    -     -    -    -    -     LAL 

	  

Exceptions :

Configuration Register: 0x20 (CrMemExc)

Exception No.	Mask	R/W Access	Cond.	Name
[3]	00000000 00000008	RW		RemLenOvf
[9]	00000000 00000200	RW	C5	Len0
[10]	00000000 00000400	RW	C5	LenOvf
[11]	00000000 00000800	RW	C5	LocalAddressOvf
[12]	00000000 00001000	RW	C5	RemoteAddressOvf

• [3] - LAL with REMOTE_SEND != 0 and LENGTH > 64
• [9] - LAL with LENGTH == 0 and QNOP == 0
• [10] - LAL with LENGTH > 0x200 and QNOP == X
• [11] - LAL with ADDRESS & MemMask
• [12] - LAL with ADDRESS & 0x800000000000 != 0

Example :

AGU_D ZERO 0x0002102000000000 ! Offset generated on the
                              ! AGU with the encoding:
                              ! Burst = 2, 
                              ! Remote offset = ox+,ix-

LAL                           ! Loads the output of the AGU

RTQ 0xb 0xc                   ! Transfers the content of regs
                              ! 0xb, 0xc to ox+, and receives
                              ! the corresponding values from 
                              ! a neighboring node on ix-