godzil/sd2snes
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

FPGA: fix large SRAM mapping

Browse Source
This commit is contained in:
Maximilian Rehkopf 2012-11-18 17:18:26 +01:00
parent e504079e5d
commit fa1e09d867
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
verilog/sd2snes/address.v
View File

@ -145,19 +145,20 @@ wire [23:0] BSX_ADDR = bsx_regs[2] ? {1'b0, SNES_ADDR[22:0]}
assign SRAM_SNES_ADDR = ((MAPPER == 3'b000) assign SRAM_SNES_ADDR = ((MAPPER == 3'b000)
?(IS_SAVERAM ?(IS_SAVERAM
? 24'hE00000 + ({SNES_ADDR[20:16], SNES_ADDR[14:0]} ? 24'hE00000 + ({SNES_ADDR[20:16], SNES_ADDR[12:0]}
& SAVERAM_MASK) & SAVERAM_MASK)
: ({1'b0, SNES_ADDR[22:0]} & ROM_MASK)) : ({1'b0, SNES_ADDR[22:0]} & ROM_MASK))
:(MAPPER == 3'b001) :(MAPPER == 3'b001)
?(IS_SAVERAM ?(IS_SAVERAM
? 24'hE00000 + ({SNES_ADDR[20:16], SNES_ADDR[14:0]} & SAVERAM_MASK) ? 24'hE00000 + ({SNES_ADDR[20:16], SNES_ADDR[14:0]}
& SAVERAM_MASK)
: ({2'b00, SNES_ADDR[22:16], SNES_ADDR[14:0]} : ({2'b00, SNES_ADDR[22:16], SNES_ADDR[14:0]}
& ROM_MASK)) & ROM_MASK))
:(MAPPER == 3'b010) :(MAPPER == 3'b010)
?(IS_SAVERAM ?(IS_SAVERAM
? 24'hE00000 + ({SNES_ADDR[20:16], SNES_ADDR[14:0]} ? 24'hE00000 + ({SNES_ADDR[20:16], SNES_ADDR[12:0]}
& SAVERAM_MASK) & SAVERAM_MASK)
: ({1'b0, !SNES_ADDR[23], SNES_ADDR[21:0]} : ({1'b0, !SNES_ADDR[23], SNES_ADDR[21:0]}
& ROM_MASK)) & ROM_MASK))