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Revert to old FSB DTACK/VPA control

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This commit is contained in:
Zane Kaminski 2024-10-06 23:07:25 -04:00
parent 8e40091786
commit 2912399c2e
1 changed files with 2 additions and 5 deletions
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7
cpld/FSB.v
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@ -22,13 +22,10 @@ module FSB(
(RAMCS && !QoSEN && RAMReady && IOPWCS && IOPWReady) ||
(ROMCS && !QoSEN) ||
(IONPReady && SndQoSReady);
always @(posedge FCLK, posedge nAS) begin
if (nAS) nDTACK <= 1;
else nDTACK <= !(Ready && !IACS);
end
always @(posedge FCLK) nDTACK <= !(Ready && BACT && !IACS);
always @(posedge FCLK, posedge nAS) begin
if (nAS) nVPA <= 1;
else nVPA <= !(Ready && IACS);
else nVPA <= !(Ready && BACT && IACS);
end
endmodule