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AR# 4325

Foundation XABEL F1.4/F1.5/F1.5i: ERROR:basnu:93 - logical block "<>" of type "FDP" is unexpanded.

説明

Keywords: Foundation, XABEL, xc3000, xc3100, init, .ap, statemachine

Urgency: Standard

General Description:
Initializing a register to a '1' (i.e. reg1.ap = '0';) using
XABEL 1.41 causes an FDP component to be written into the EDN file.
This causes the following error when implementing an XC3000 family design:

Checking expanded design ...
ERROR:basnu:93 - logical block "<reg name>" of type "FDP" is
unexpanded.


For all FPGA Families except the XC3000 there are FDP macro's. The problem is
that the Abel compilier is creating FDP's in 3000 edn files. This is causing the
unexpanded error's in MAP.

ソリューション

1

One workaround in Foundation is to create a FDP.edn macro with the Foundation
schematic tool. This can be done by using an FDC component. Invert both the
D-input and output and connect the CLR pin to a net named PRE. Export either
an EDIF or XNF netlist. Placing the FDP.(edn/xnf) file in the working directory allows
the design to implement successfully. The example XNF code included below may
be saved as a text file named FDP.XNF.

Another workaround is using an older compiler which generates xnf.
Xabel 5 created correct xnf syntax for registers initialized to '1' in
xc3000 designs.


FDP.XNF
____________________________________________________________________

LCANET, 6
PROG, TEXT "created Mon Aug 31, 1998"
PART, XC3000A
SYM, inv_in, INV, SCHNM=INV, LIBVER=2.0.0
PIN, I, I, D
PIN, O, O, DB
END
SYM, FDC1, DFF, SCHNM=FDC, LIBVER=2.0.0
PIN, C, I, C
PIN, CLR, I, PRE
PIN, D, I, DB
PIN, Q, O, QB
END
SYM, inv_out, INV, SCHNM=INV, LIBVER=2.0.0
PIN, I, I, QB
PIN, O, O, Q
END
EOF

2

AR# 4325
作成日 07/24/1998
最終更新日 06/10/2002
ステータス アーカイブ
タイプ 一般