Changeset 22 in XOpenSparcT1 for trunk/WB/wb_conbus_top.v

Timestamp:

03/31/11 12:31:26 (13 years ago)

Author:

pntsvt00

Message:

checkpoint: la DDR effettua l'init

File:

• trunk/WB/wb_conbus_top.v (modified) (1 diff)

trunk/WB/wb_conbus_top.v

@@ -133 +133 @@
 
 
-//parameter             s0_addr_w = 1 ;                 // slave 0 address decode width
-//parameter             s0_addr = 1'b0; // slave 0 address
-//parameter             s1_addr_w = 41 ;                        // slave 1 address decode width
-//parameter             s1_addr = {40'h800000FFF0,1'b0};        // slave 1 address 
+// address for DDR from 0x0 to 0x7fffffff_ffffffff (64'h00000000_00000000 to 64'h7fffffff_ffffffff)
 parameter               s0_addr_w = 1 ;                 // slave 0 address decode width
-parameter               s0_addr = 1'b1;      // slave 0 address
-
+parameter               s0_addr = 1'b0; // slave 0 address
+
+//address for a 32MB flash from 0x800000ff_f0800000 to 0x800000ff_f0ffffff 
+//Check address_w 
+// 32 MB --> 8 MW X32 bits --> 2^23 --> addr_w=64-23=41 
 parameter               s1_addr_w = 41 ;                        // slave 1 address decode width
-parameter               s1_addr = {40'h0000000000,1'b0};        // slave 1 address 
+parameter               s1_addr = {40'h800000FFF0,1'b0};        // slave 1 address 
 
 parameter               s2_addr_w = 56 ;                   
-parameter               s2_addr = {56'h800000FFF0C2C1}; // slave 2 address
+parameter               s2_addr = {56'h800000FFF0C2C1};         // slave 2 address
 parameter               s3_addr_w = 60 ;                   
 parameter               s3_addr = {60'h800000FFF0C2C00};        // slave 3 address
 parameter               s4_addr_w = 37 ;                   
-parameter               s4_addr = {36'h800000FFF,1'b1}; // slave 4 address
+parameter               s4_addr = {36'h800000FFF,1'b1};         // slave 4 address
 parameter               s5_addr_w = 60 ;                   
 parameter               s5_addr = {60'h400000F00000000};        // slave 5 address