diff options
| author | Alexey 'Cluster' Avdyukhin <clusterrr@clusterrr.com> | 2020-09-25 09:28:01 +0300 |
|---|---|---|
| committer | Alexey 'Cluster' Avdyukhin <clusterrr@clusterrr.com> | 2020-09-25 09:28:01 +0300 |
| commit | 77da7fe4d859d1271c576de8d2f3219eb83b9928 (patch) | |
| tree | b9f3b9c0efcdd70ba044e7e7fc46227a6e5456e1 | |
| parent | e0487c772d308af6ada9c0ce3658f48dd807d857 (diff) | |
Mapper #90 fix
| -rw-r--r-- | CoolGirl_mappers.vh | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/CoolGirl_mappers.vh b/CoolGirl_mappers.vh index 6342959..0380afd 100644 --- a/CoolGirl_mappers.vh +++ b/CoolGirl_mappers.vh @@ -96,7 +96,7 @@ reg [14:0] mapper42_irq_value = 0; // counter itself (upcounting) wire mapper42_irq_out = mapper42_irq_value[14] & mapper42_irq_value[13];
// for mapper #90, unfiltered PPU A12 counter
reg mapper90_irq_enabled = 0; // register to enable/disable counter
-//reg [7:0] mapper90_xor; // XOR register (is not used actually)
+reg [7:0] mapper90_xor; // XOR register (is not used actually)
reg [10:0] mapper90_irq_latch = 0; // stores counter reload latch value
reg [10:0] mapper90_irq_counter = 0; // counter itself (downcounting)
reg mapper90_irq_reload = 0; // flag to reload counter and prescaler from latch
@@ -700,14 +700,14 @@ begin 3'b010: mapper90_irq_enabled = 0;
3'b011: mapper90_irq_enabled = 1;
3'b100: begin
- mapper90_irq_latch[2:0] = cpu_data_in[2:0]; // ^ mapper90_xor[2:0];
+ mapper90_irq_latch[2:0] = cpu_data_in[2:0] ^ mapper90_xor[2:0];
mapper90_irq_reload = 1;
end
3'b101: begin
- mapper90_irq_latch[10:3] = cpu_data_in; // ^ mapper90_xor;
+ mapper90_irq_latch[10:3] = cpu_data_in ^ mapper90_xor;
mapper90_irq_reload = 1;
end
- 3'b110: ;//mapper90_xor = cpu_data_in;
+ 3'b110: mapper90_xor = cpu_data_in;
3'b111: ;
endcase
end
@@ -722,10 +722,10 @@ begin 3'b011: mmc3_irq_enabled = 1;
3'b100: ;
3'b101: begin
- mmc3_irq_latch = cpu_data_in; // ^ mapper90_xor;
+ mmc3_irq_latch = cpu_data_in ^ mapper90_xor;
mmc3_irq_reload = 1;
end
- 3'b110: ;//mapper90_xor = cpu_data_in;
+ 3'b110: mapper90_xor = cpu_data_in;
3'b111: ;
endcase
end
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