Fix tileaddr bug. Make bus interface more explicit.

diff --git a/LCDC.v b/LCDC.v
index a8bec018d7cc543adcefac09097cb51042302a83..9a111f7bd2de8fa3a37a1c1895a6fbf0532f0fab 100644 (file)
--- a/LCDC.v
+++ b/LCDC.v
@@ -137,7 +137,7 @@ module LCDC(
        // The new tile data is latched and ready when vxpos[2:0] is 3'b000!
        wire [9:0] bgmapaddr = {vypos[7:3], vxpos[7:3]};
        reg [7:0] tileno;
-       wire [10:0] tileaddr = {tileno, vypos[2:1]};
+       wire [10:0] tileaddr = {tileno, vypos[2:0]};
        reg [7:0] tilehigh, tilelow;
        assign pixdata = {tilehigh[vxpos[2:0]], tilelow[vxpos[2:0]]};
        
@@ -166,21 +166,21 @@ module LCDC(
   
        /***** Bus interface *****/
        assign data = rd ?
-                       (addr == `ADDR_LCDC) ? rLCDC :
-                       (addr == `ADDR_STAT) ? {rSTAT[7:3], (rLYC == posy) ? 1'b1 : 1'b0, mode} :
-                       (addr == `ADDR_SCY) ? rSCY :
-                       (addr == `ADDR_SCX) ? rSCX :
-                       (addr == `ADDR_LY) ? posy :
-                       (addr == `ADDR_LYC) ? rLYC :
-                       (addr == `ADDR_BGP) ? rBGP :
-                       (addr == `ADDR_OBP0) ? rOBP0 :
-                       (addr == `ADDR_OBP1) ? rOBP1 :
-                       (addr == `ADDR_WY) ? rWY :
-                       (addr == `ADDR_WX) ? rWX :
-                       (decode_tiledata && addr[0]) ? tilehigh :
-                       (decode_tiledata && ~addr[0]) ? tilelow :
-                       (decode_bgmap1) ? tileno :
-                       8'bzzzzzzzz :
+                       ((addr == `ADDR_LCDC) ? rLCDC :
+                        (addr == `ADDR_STAT) ? {rSTAT[7:3], (rLYC == posy) ? 1'b1 : 1'b0, mode} :
+                        (addr == `ADDR_SCY) ? rSCY :
+                        (addr == `ADDR_SCX) ? rSCX :
+                        (addr == `ADDR_LY) ? posy :
+                        (addr == `ADDR_LYC) ? rLYC :
+                        (addr == `ADDR_BGP) ? rBGP :
+                        (addr == `ADDR_OBP0) ? rOBP0 :
+                        (addr == `ADDR_OBP1) ? rOBP1 :
+                        (addr == `ADDR_WY) ? rWY :
+                        (addr == `ADDR_WX) ? rWX :
+                        (decode_tiledata && addr[0]) ? tilehigh :
+                        (decode_tiledata && ~addr[0]) ? tilelow :
+                        (decode_bgmap1) ? tileno :
+                        8'bzzzzzzzz) :
                8'bzzzzzzzz;
   
        always @(negedge clk)

diff --git a/diag.asm b/diag.asm
index bc164a0202132a05d806f0cdc8a500fa6ad4357a..5d44cef29f6ba6c9654ef0dada74bf8868e4ae68 100644 (file)
--- a/diag.asm
+++ b/diag.asm
@@ -52,10 +52,12 @@ signon:
 
 putscreen:
        ; Wait for vblank
-;.stat:        ld a, [$FF41]   ; STAT
-;      and $03         ; mode
-;      cp $01          ; VBLANK
-;'     jp nz, .stat
+       ld c, $41
+.stat: ld a, [c]
+       ld [$FF51], a
+       and $03         ; mode
+       cp $01          ; VBLANK
+       jr nz, .stat
 
        ld hl, $8000    ; Copy two tiles.
        ld a, $AA