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[C16] Fix charpos reload latching (Alpharay bottom line)

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This commit is contained in:
Gyorgy Szombathelyi
2019-09-20 23:20:17 +02:00
parent a446f48412
commit 41fc98a704
1 changed files with 2 additions and 2 deletions
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4
cores/c16/ted.v
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@@ -634,7 +634,7 @@ always @(posedge clk) // DMA and Charpos latch delay trick
always @(posedge clk)
begin
if(latch_charposition)
if(hpos_392)
begin
if(VertSubCount==6)
CharPosLatch<=1; // CharPosLatch signal activates in line 6 and signals that videocounter (DMA counter) has been latched. It is used in line 7 for character position latch.
@@ -651,7 +651,7 @@ always @(posedge clk) // Character Position Reload register $FF1A/$FF1B
CharPosReload[7:0]<=data_in;
else if(hpos_392 & videoline==EOS) // clear character position reload at last line
CharPosReload<=0;
else if(CharPosLatch & latch_charposition & VertSubActive) // latch character position at 7th line of a character row if videocunter was latched in previous 6th row
else if(CharPosLatch & latch_charposition & enabledisplay) // latch character position at 7th line of a character row if videocunter was latched in previous 6th row
CharPosReload<=CharPosition;
end