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VME64x core
Commits
ffa531dc
Commit
ffa531dc
authored
Feb 11, 2020
by
Tomasz Wlostowski
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vme_bus: don't go to CHECK_TRANSFER_TYPE if DS inactive, causes an infinite loop
parent
dbf0b46b
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2 deletions
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-2
vme_bus.vhd
hdl/rtl/vme_bus.vhd
+3
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hdl/rtl/vme_bus.vhd
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ffa531dc
...
...
@@ -268,7 +268,7 @@ begin
variable
addr_word_incr
:
natural
range
0
to
7
;
begin
if
rising_edge
(
clk_i
)
then
if
rst_n_i
=
'0'
or
vme_as_n_i
=
'1
'
then
if
rst_n_i
=
'0'
or
vme_as_n_i
/=
'0
'
then
-- FSM reset after power up,
-- software reset, manually reset,
-- on rising edge of AS.
...
...
@@ -297,6 +297,7 @@ begin
s_ADDRlatched
<=
(
others
=>
'0'
);
s_AMlatched
<=
(
others
=>
'0'
);
s_DSlatched_n
<=
(
others
=>
'1'
);
s_vme_addr_reg
<=
(
others
=>
'0'
);
s_vme_addr_dir
<=
'0'
;
...
...
@@ -459,7 +460,7 @@ begin
-- MBLT: ack address.
-- (Data are also read but discarded).
s_mainFSMstate
<=
DTACK_LOW
;
els
e
els
if
s_DSlatched_n
/=
"11"
then
s_mainFSMstate
<=
CHECK_TRANSFER_TYPE
;
end
if
;
...
...
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