riscv
/
alliance
mirror of https://gitlab.lip6.fr/vlsi-eda/alliance.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Corrected behavioral view in order to be simulated with Asimut.

This commit is contained in:
Jean-Paul Chaput 2004-08-31 08:37:17 +00:00
parent a025203d40
commit 8a4b6d3e9d
2 changed files with 112 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
alliance/src/cells/src/ramlib/ram_mem_data.vbe
View File

@ -1,20 +1,49 @@
ENTITY ram_mem_data IS entity RAM_MEM_DATA is
PORT (
selxi : in BIT;
bit0 : in BIT;
nbit0 : in BIT;
bit1 : in BIT;
nbit1 : in BIT;
vdd : in BIT;
vss : in BIT
);
END ram_mem_data;
ARCHITECTURE VBE OF ram_mem_data IS port
(
SELXI : in bit ;
BIT0 : inout wor_bit bus;
NBIT0 : inout wor_bit bus;
BIT1 : inout wor_bit bus;
NBIT1 : inout wor_bit bus;
VDD : in bit ;
VSS : in bit
);
BEGIN end RAM_MEM_DATA;
ASSERT (vdd and not (vss))
REPORT "power supply is missing on ram_mem_data" architecture vbe of RAM_MEM_DATA is
SEVERITY WARNING;
signal LATCH0 : reg_bit register;
signal LATCH1 : reg_bit register;
begin
assert (VDD ='1' and VSS = '0')
report "power supply is missing on ram_mem_data"
severity WARNING;
WRITE_0 : BLOCK ((SELXI and (BIT0 xor NBIT0)) = '1')
begin
LATCH0 <= guarded BIT0;
end block;
WRITE_1 : BLOCK ((SELXI and (BIT1 xor NBIT1)) = '1')
begin
LATCH1 <= guarded BIT1;
end block;
READ_0 : BLOCK ((SELXI and not SELXI'STABLE) = '1')
begin
BIT0 <= guarded LATCH0;
NBIT0 <= guarded not LATCH0;
end block;
READ_1 : BLOCK ((SELXI and not SELXI'STABLE) = '1')
begin
BIT1 <= guarded LATCH1;
NBIT1 <= guarded not LATCH1;
end block;
END; END;

91
alliance/src/cells/src/ramlib/ram_sense_data.vbe
View File

@ -1,27 +1,70 @@
ENTITY ram_sense_data IS entity RAM_SENSE_DATA is
PORT (
bit0 : in BIT;
nbit0 : in BIT;
bit1 : in BIT;
nbit1 : in BIT;
ad0x : in BIT;
nad0x : in BIT;
sensex : in BIT;
nsensex : in BIT;
prechx : in BIT;
writex : in BIT;
din : in BIT;
dout : out BIT;
vdd : in BIT;
vss : in BIT
);
END ram_sense_data;
ARCHITECTURE VBE OF ram_sense_data IS port
(
bit0 : inout wor_bit bus;
Nbit0 : inout wor_bit bus;
bit1 : inout wor_bit bus;
Nbit1 : inout wor_bit bus;
AD0X : in bit ;
NAD0X : in bit ;
SENSEX : in bit ;
NSENSEX : in bit ;
PRECHX : in bit ;
WRITEX : in bit ;
DIN : in bit ;
DOUT : out mux_bit bus;
VDD : in bit ;
VSS : in bit
);
BEGIN end RAM_SENSE_DATA;
ASSERT (vdd and not (vss))
REPORT "power supply is missing on ram_sense_data"
SEVERITY WARNING;
END; architecture vbe of RAM_SENSE_DATA is
begin
assert (VDD = '1' and VSS = '0')
report "power supply is missing on ram_sense_data"
severity WARNING;
assert ((AD0X xor NAD0X ) = '1')
report "conflicting ad0x / nad0x in ram_sense_data"
severity WARNING;
assert ((SENSEX xor NSENSEX) = '1')
report "conflicting sensex / nsensex in ram_sense_data"
severity WARNING;
WRITE_0 : block (NAD0X = '1' and WRITEX = '1')
begin
BIT0 <= guarded DIN;
NBIT0 <= guarded not DIN;
end block;
WRITE_1 : block (AD0X = '1' and WRITEX = '1')
begin
BIT1 <= guarded DIN;
NBIT1 <= guarded not DIN;
end block;
SENSE_0 : block (PRECHX = '0' and WRITEX = '0' and (BIT0 xor NBIT0) = '1')
begin
BIT0 <= guarded BIT0 ;
NBIT0 <= guarded NBIT0;
end block;
SENSE_1 : block (PRECHX = '0' and WRITEX = '0' and (BIT1 xor NBIT1) = '1')
begin
BIT1 <= guarded BIT1 ;
NBIT1 <= guarded NBIT1;
end block;
DATA_OUT : block (SENSEX = '1')
begin
with AD0X select
DOUT <= guarded bit0 when '0',
bit1 when '1';
end block;
end;