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Add new_vblank_n test in ATTR_LATCHING_S1 state of K5295.

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This should fix the remaining occurrences of sprites disappearing after a reset.
This commit is contained in:
Olivier Scherler
2022-04-24 17:10:00 +02:00
parent de2cbc584f
commit e7f2b11d5d
1 changed files with 17 additions and 10 deletions
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27
BubSysROM_core_ModelSim/BubSysROM_component/asic/K005295.v
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@@ -743,20 +743,27 @@ begin
ATTR_LATCHING_S1:
if(pixel3_n == 1'b0) //exit condition: 1 pixel just after end of ORINC(negative logic)
begin
if(LATCH_F_2H_NCLKD_en_n == 1'b0)
if(new_vblank_n == 1'b0)
begin
if(FSM_SUSPEND == 1'b0) //keep going
begin
sprite_engine_state <= HCOUNT_S0;
end
else //if not, go suspend_s0
begin
sprite_engine_state <= SUSPEND_S0;
end
sprite_engine_state <= ATTR_LATCHING_S0; //new vblank
end
else
begin
sprite_engine_state <= ATTR_LATCHING_S1;
if(LATCH_F_2H_NCLKD_en_n == 1'b0)
begin
if(FSM_SUSPEND == 1'b0) //keep going
begin
sprite_engine_state <= HCOUNT_S0;
end
else //if not, go suspend_s0
begin
sprite_engine_state <= SUSPEND_S0;
end
end
else
begin
sprite_engine_state <= ATTR_LATCHING_S1;
end
end
end
else