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https://opencores.org/ocsvn/openrisc/openrisc/trunk
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- This comparison shows the changes necessary to convert path
/openrisc/trunk
- from Rev 849 to Rev 848
- ↔ Reverse comparison
Rev 849 → Rev 848
/orpsocv2/rtl/verilog/or1200/or1200_dc_fsm.v
312,8 → 312,7
// LSU straight off external data bus. In |
// this was is also used for cache inhibit |
// loads. |
// first_hit_ack takes precedence over first_miss_ack |
assign first_miss_ack = ~first_hit_ack & (load_miss_ack | load_inhibit_ack); |
assign first_miss_ack = load_miss_ack | load_inhibit_ack; |
|
// ACK cache hit on load |
assign load_hit_ack = (state == `OR1200_DCFSM_CLOADSTORE) & |
/orpsocv2/rtl/verilog/or1200/or1200_ic_fsm.v
122,18 → 122,14
//assign saved_addr = hitmiss_eval ? start_addr : saved_addr_r; |
assign saved_addr = saved_addr_r; |
|
// Asserted when a cache hit occurs and the first word is ready/valid |
// |
// Assert for cache hit first word ready |
// Assert for cache miss first word stored/loaded OK |
// Assert for cache miss first word stored/loaded with an error |
// |
assign first_hit_ack = (state == `OR1200_ICFSM_CFETCH) & hitmiss_eval & |
!tagcomp_miss & !cache_inhibit; |
|
// Asserted when a cache miss occurs, but the first word of the new |
// cache line is ready (on the bus) |
// Cache hits overpower bus data |
assign first_miss_ack = (state == `OR1200_ICFSM_CFETCH) & biudata_valid & |
~first_hit_ack; |
|
// Asserted when a cache occurs, but there was a bus error with handling |
// the old line or fetching the new line |
assign first_miss_ack = (state == `OR1200_ICFSM_CFETCH) & biudata_valid; |
assign first_miss_err = (state == `OR1200_ICFSM_CFETCH) & biudata_error; |
|
// |
179,9 → 175,6
|
if (hitmiss_eval) |
saved_addr_r[31:`OR1200_ICTAGL] <= start_addr[31:`OR1200_ICTAGL]; |
|
// Check for stopped cache loads |
// instruction cache turned-off |
if ((!ic_en) || |
// fetch aborted (usually caused by IMMU) |
(hitmiss_eval & !icqmem_cycstb_i) || |