gb: fix ldh for RGBDS 0.9

gameboy/src/gbctests.z80

@@ -461,9 +461,9 @@ gradient_push_palette:
     halt
     rept 4
       ld a,l
-      ld [$FF00+c],a
+      ldh [c],a
       ld a,h
-      ld [$FF00+c],a
+      ldh [c],a
       add hl,de
     endr
     dec b

gameboy/src/huffnib.z80

@@ -32,7 +32,7 @@ canohuff_decode_symbol:
 .loop:
   ; 4 Fetch number of codes of this length
   inc c
-  ld a, [$ff00 + c]
+  ldh a, [c]
   ld d, a  ; D: ncodesofthislength
 
   ; 2 Set range_end to the total number of codes seen so far,
@@ -97,7 +97,7 @@ canohuff_read_lengths:
   ld a, [hl+]
   swap a
   and $0F
-  ld [$FF00 + c], a
+  ldh [c], a
   inc c
   cp $0F
   jr c, .headerloop
@@ -226,7 +226,7 @@ walk_huff_tree:
   push de
   ld c, low(hTree)
   ; Read initial literal bits from tree header
-  ld a, [$FF00 + c]
+  ldh a, [c]
   and $0C  ; only initial literal bits matter
 .get_next_node:
   ; A.1-0: offset to next node
@@ -237,7 +237,7 @@ walk_huff_tree:
   add c
   ld c, a
   inc c
-  ld a, [$FF00 + c]
+  ldh a, [c]
 
   ; A: next node
   ; 10 Handle next bit

gameboy/src/mdfourier.z80

@@ -103,7 +103,7 @@ load_waveram_hl::
   lb bc, 16, _AUD3WAVERAM
   .loop:
     ld a, [hl+]
-    ld [$FF00+c], a
+    ldh [c], a
     inc c
     djnz .loop
   ld a, $80
@@ -134,7 +134,7 @@ mdfourier_push_apubuffer:
   .loop:
     ld c, a
     ld a, [hl+]
-    ld [$FF00+c], a
+    ldh [c], a
   .loopcontinue:
     ld a, [hl+]
     or a

gameboy/src/megaton.z80

@@ -274,7 +274,7 @@ activity_megaton_complete:
   ld bc,MAX_TESTS*$100+low(framecounts)
   .sumloop:
     ld d,a
-    ld a,[$FF00+c]
+    ldh a, [c]
     add d
     inc c
     dec b
@@ -431,7 +431,7 @@ grade_press:
   add low(framecounts)
   ld c, a  ; C = where to write result
   ld a, d
-  ld [$FF00+c],a
+  ldh [c],a
   fallthrough draw_result_b
 
 draw_result_b:
@@ -444,7 +444,7 @@ draw_result_b:
   ld a,low(framecounts)
   add b
   ld c,a
-  ld a,[$FF00+C]
+  ldh a, [c]
 
   ; Bit 7: Early
   push af  ; Stack: raw value, which result

gameboy/src/motionblur.z80

@@ -227,7 +227,7 @@ motionblur_handle_dpad::
   ; Ranges differ between mono and GBC
   ld a,[help_cursor_y]
   call de_index_a  ; Valid values are L <= x < H
-  ld a,[$FF00+c]
+  ldh a, [c]
 
   ; Left/Right: Change value on this row.  D = old value
   ld d, a
@@ -245,7 +245,7 @@ motionblur_handle_dpad::
   cp h
   ret nc
   add l
-  ld [$FF00+c],a
+  ldh [c],a
   ret
 
 
@@ -291,7 +291,7 @@ make_help_vram:
   ld bc,5*256+low(back_shade)
   ld hl,help_line_buffer
   .loop:
-    ld a,[$FF00+c]
+    ldh a, [c]
     push bc
     call bcd8bit_ac
     jr nz,.has_tens
@@ -332,7 +332,7 @@ motionblur_calc_bgp:
     add a
     add low(on_time)
     ld c,a
-    ld a,[$FF00+c]
+    ldh a, [c]
     ldh [frames_left],a
 
     ; And toggle to the other frame
@@ -448,10 +448,10 @@ motionblur_calc_bgp:
   add hl,de
   ; write to 
   ld a,l
-  ld [$FF00+c],a
+  ldh [c],a
   inc c
   ld a,h
-  ld [$FF00+c],a
+  ldh [c],a
   inc c
   ret
 

gameboy/src/overscan.z80

@@ -138,7 +138,7 @@ activity_overscan::
     ; Regs at this point:
     ; C: HRAM pointer to border position
     ; B: Direction (0: decrease; 1: increase; 2: Nothing)
-    ld a,[$FF00+c]
+    ldh a, [c]
     srl b  ; direction in carry, z true if valid
     jr nz,.a_done
     jr c,.dir_is_increase
@@ -151,7 +151,7 @@ activity_overscan::
     ; Regs: C is HRAM pointer; A is new value to write if valid
     cp 25
     jr nc,.a_done
-    ld [$FF00+c],a
+    ldh [c],a
   .a_done:
   
   call overscan_draw_sprites
@@ -244,7 +244,7 @@ overscan_draw_sprites:
   ld a,low(right_border)
   add b
   ld c,a
-  ld a,[$FF00+c]
+  ldh a, [c]
   ld c,a  ; C = size of this border
 
   ; Regmap:

gameboy/src/ppuclear.z80

@@ -133,11 +133,11 @@ SECTION "load_gbc_palette", ROM0
 ; @param HL data source
 ; @return HL at end, C increased by 1, B = 0, DE unchanged
 set_gbc_palette::
-  ld [$FF00+c],a
+  ldh [c],a
   inc c
 .loop:
   ld a,[hl+]
-  ld [$FF00+c],a
+  ldh [c],a
   dec b
   jr nz,.loop
   ret
@@ -208,7 +208,7 @@ set_gbc_mono_palette::
   rlca
   ld e,a
   ld a,b  ; Regmap now: E=BGP<<1, A=palette offset, C=address port
-  ld [$FF00+c],a
+  ldh [c],a
   inc c   ; C=data port
   ld b,4  ; color count
   ld h,high(gbmonopalette)
@@ -220,9 +220,9 @@ set_gbc_mono_palette::
     or low(gbmonopalette)
     ld l,a  ; now L points to this color so stuff it into the palette
     ld a,[hl+]
-    ld [$FF00+c],a
+    ldh [c],a
     ld a,[hl-]
-    ld [$FF00+c],a
+    ldh [c],a
     ld a, e  ; move to next bitfield of BGP
     rrca
     rrca

gameboy/src/scrolltest.z80

@@ -781,11 +781,11 @@ load_kiki_bg:
       rla   ; A=1 if alternate palette else 0
       ld d,a
       ld a,b
-      ld [$FF00+c],a
+      ldh [c],a
       ld a,d
       ld [hl+],a
       xor a
-      ld [$FF00+c],a
+      ldh [c],a
       ld a,h
       cp high(_SCRN1)
       jr c,.attrloop

gameboy/src/sgbtests.z80

@@ -800,13 +800,13 @@ sgb_sound_draw_values:
   call .do3rows
   dec hl
 .do3rows:
-  ld a, [$FF00+c]
+  ldh a, [c]
   inc c
   call puthex_raw
   add hl, de
   call .do1row
 .do1row:
-  ld a, [$FF00+c]
+  ldh a, [c]
   inc c
   call putnibble_raw
   add hl, de

gameboy/src/stills.z80

@@ -796,7 +796,7 @@ activity_solid_screen::
 
     add low(customred)
     ld c,a
-    ld a,[$FF00+c]
+    ldh a, [c]
     ld e, a  ; E = last value
     bit PADB_RIGHT,b
     jr z,.not_custom_increase
@@ -809,7 +809,7 @@ activity_solid_screen::
     ; if the new value is valid, write it back
     cp 32
     jr nc, .custom_no_change
-      ld [$FF00+c],a
+      ldh [c],a
       xor e  ; set E iff changed
       ldh [lastlcdc], a
     .custom_no_change:
@@ -899,7 +899,7 @@ solid_update_rgb:
 .componentloop:
   push de
   ld c,e
-  ld a,[$FF00+c]
+  ldh a, [c]
   call bcd8bit_ac  ; A: tens; C: ones
   jr z,.lessthanten
     push bc
@@ -1433,22 +1433,22 @@ activity_convergence::
     .gbc_have_bcps:
     ld hl, convergence_gbc_palette
     ld bc, $0400 + low(rBCPS)
-    ld [$FF00+c], a
+    ldh [c], a
     inc c
     .gbcpalloop:
       xor a
-      ld [$FF00+c], a
-      ld [$FF00+c], a
-      ld [$FF00+c], a
-      ld [$FF00+c], a
+      ldh [c], a
+      ldh [c], a
+      ldh [c], a
+      ldh [c], a
       ld a, [hl+]
-      ld [$FF00+c], a
+      ldh [c], a
       ld a, [hl-]
-      ld [$FF00+c], a
+      ldh [c], a
       ld a, [hl+]
-      ld [$FF00+c], a
+      ldh [c], a
       ld a, [hl+]
-      ld [$FF00+c], a
+      ldh [c], a
       dec b
       jr nz, .gbcpalloop
     jr .palette_done

gameboy/src/stopwatch.z80

@@ -272,26 +272,26 @@ activity_stopwatch::
 sw_inc_counter:
   lb bc, frames_bcd - hours, low(frames_bcd)
   .loop:
-    ld a, [$FF00+c]
+    ldh a, [c]
     inc a
     daa
-    ld [$FF00+C], a
+    ldh [c], a
     cp $60
     ret c
     ; If increased past 60, clear it and continue to the next digit
     xor a
-    ld [$FF00+C], a
+    ldh [c], a
     dec c
     dec b
     jr nz, .loop
 
-  ld a,[$FF00+C]  ; Hours wrap at 10, not 60
+  ldh a, [c]  ; Hours wrap at 10, not 60
   inc a
   cp 10
   jr c,.not_wrap_hours
     xor a
   .not_wrap_hours:
-  ld [$FF00+C],a
+  ldh [c],a
   ret
 
 digits_label_msg: