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IACK now just based on A[23:20] instead of A[23:16]
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@ -43,7 +43,6 @@ module CS(
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((A[15:12]==4'hA) && (A[11:8]==4'h1 || A[11:8]==4'h2 || A[11:8]==4'h3)));
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/* Select signals - IOB domain */
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assign IACS = A[23:16]==8'hFF; // IACK
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assign IOCS = A[23:20]==4'hF || // IACK
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A[23:20]==4'hE || // VIA
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A[23:20]==4'hD || // IWM
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@ -58,4 +57,5 @@ module CS(
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(A[23:20]==4'h4 && Overlay) || // ROM once
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VidRAMCSWR; // Write to video RAM
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assign IOPWCS = VidRAMCSWR;
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assign IACS = A[23:20]==4'hF; // IACK
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endmodule
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