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FPGA: properly map large SRAM (LoROM > 32kB, HiROM > 8kB)

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This commit is contained in:
Maximilian Rehkopf 2012-09-24 22:52:05 +02:00
parent 13c24bea9d
commit 9287d637d1
1 changed files with 3 additions and 3 deletions
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6
verilog/sd2snes/address.v
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@ -136,19 +136,19 @@ wire [23:0] BSX_ADDR = bsx_regs[2] ? {1'b0, SNES_ADDR[22:0]}
assign SRAM_SNES_ADDR = ((MAPPER == 3'b000)
?(IS_SAVERAM
? 24'hE00000 + ((SNES_ADDR[14:0] - 15'h6000)
? 24'hE00000 + ({SNES_ADDR[20:16], SNES_ADDR[14:0]}
& SAVERAM_MASK)
: ({1'b0, SNES_ADDR[22:0]} & ROM_MASK))
:(MAPPER == 3'b001)
?(IS_SAVERAM
? 24'hE00000 + (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]}
& ROM_MASK))
:(MAPPER == 3'b010)
?(IS_SAVERAM
? 24'hE00000 + ((SNES_ADDR[14:0] - 15'h6000)
? 24'hE00000 + ({SNES_ADDR[20:16], SNES_ADDR[14:0]}
& SAVERAM_MASK)
: ({1'b0, !SNES_ADDR[23], SNES_ADDR[21:0]}
& ROM_MASK))