Syntax:

• FPUSHEQ Rs3 BS3 Rs0 Rs1 Rs2
• FPUSHNE Rs3 BS3 Rs0 Rs1 Rs2
• FPUSHLE Rs3 BS3 Rs0 Rs1 Rs2
• FPUSHLT Rs3 BS3 Rs0 Rs1 Rs2
• FPUSHGE Rs3 BS3 Rs0 Rs1 Rs2
• FPUSHGT Rs3 BS3 Rs0 Rs1 Rs2

Description:

FPUSHxx pushes the following boolean conditions on top of the stack:

Bank Selector	High Condition	Low Condition
BS3 = 1 (low)	([Rs0].L*[Rs1].L) op [Rs2].L	([Rs0].L*[Rs1].L) op [Rs2].L
BS3 = 2 (high)	([Rs0].H*[Rs1].H) op [Rs2].H	([Rs0].H*[Rs1].H) op [Rs2].H
BS3 = 3 (vector)	([Rs0].H*[Rs1].H) op [Rs2].H	([Rs0].L*[Rs1].L) op [Rs2].L

Note: "[Rs].X" denotes the data on bank X of register Rs; and "op" depends on the relation:

• For EQ, "op" is ==
• For NE, "op" is !=
• For GT, "op" is >
• For LT, "op" is <
• For GE, "op" is >=
• For LE, "op" is <=

Comparison is done through floating point normal operations. It is customary to have in the relevant banks of Rs1 the value 1.0 (i.e., 0x3FF0000000000000).

Microcode Pattern:

Takes 9 cycles to execute.
    Example: FPUSHxx 0xFF 3 0x40 0xA 0xB

	  
STKC  FLW  IOC  AGU   ASEL BS5 P5 BS4 C4 P4  MPC  BS3 C3 P3 P2 P1 P0
--------------------------------------------------------------------
  -    -    -    -      -   0  00  0   0 00  FN01  0   0 00 00 0a 40
  -    -    -    -      -   0  00  0   0 00    -   0   0 00 00 00 00
  -    -    -    -      -   0  00  0   0 00    -   0   0 00 0b 00 00
  -    -    -    -      -   0  00  0   0 00    -   0   0 00 00 00 00
  -    -    -    -      -   0  00  0   0 00    -   0   0 00 00 00 00
  -    -    -    -      -   0  00  0   0 00    -   0   0 00 00 00 00
  -    -    -    -      -   0  00  0   0 00    -   0   0 00 00 00 00
  -    -    -    -      -   0  00  0   0 00    -   3   0 ff 00 00 00
 Pxx   -    -    -      -   0  00  0   0 00    -   0   0 00 00 00 00
--------------------------------------------------------------------
 Where: xx is one of {EQ,NE,LE,LT,GE,GT}.

	  

Exceptions :

The exceptions are the same as the ones of the FNORM operations.

Example :

!! Initial conditions:
!! Content of register 0xA: 
!!     [0xA].H = 0xC004000000000000 
!!     [0xA].L = 0x400C000000000000
!!
!! Content of register 0xB:  
!!     [0xB].H = 0x3FF0000000000000 
!!     [0xA].L = 0x3FF0000000000000
!!
!! Content of register 0xC:  
!!     [0xC].H = 0xC004000000000000 
!!     [0xC].L = 0x401E000000000000

FPUSHEQ 255 3 0xA 0xB 0xC   !! Pushes: High = TRUE  Low = FALSE
FPUSHEQ 255 2 0xA 0xB 0xC   !! Pushes: High = TRUE  Low = TRUE
FPUSHEQ 255 1 0xA 0xB 0xC   !! Pushes: High = FALSE Low = FALSE