ref: 955b53047c6d2ddc223ed24191de98f4b4fee5e5
parent: 61dbfa440bd83b8bb490ec7e1c44ea6f0aed66df
author: yenatch <yenatch@gmail.com>
date: Fri May 23 11:25:16 EDT 2014
More complete hardware constants. Rename joypad constants.
--- a/constants.asm
+++ b/constants.asm
@@ -6,6 +6,7 @@
INCLUDE "constants/hardware_constants.asm"
INCLUDE "constants/oam_constants.asm"
+INCLUDE "constants/misc_constants.asm"
INCLUDE "constants/wram_constants.asm"
--- a/constants/hardware_constants.asm
+++ b/constants/hardware_constants.asm
@@ -1,21 +1,111 @@
-; hardware registers, from the pandocs http://nocash.emubase.de/pandocs.htm
-rJOYP EQU $FF00
-rDIV EQU $FF04
-rLCDC EQU $FF40
-rSCY EQU $FF42
-rSCX EQU $FF43
-rBGP EQU $FF47
-rOBP0 EQU $FF48
-rOBP1 EQU $FF49
-rWY EQU $FF4A
-rWX EQU $FF4B
-rIE EQU $FFFF
-
-BTN_A EQU %00000001
-BTN_B EQU %00000010
-BTN_SELECT EQU %00000100
-BTN_START EQU %00001000
-BTN_RIGHT EQU %00010000
-BTN_LEFT EQU %00100000
-BTN_UP EQU %01000000
-BTN_DOWN EQU %10000000
\ No newline at end of file
+; From http://nocash.emubase.de/pandocs.htm.
+
+; MBC3
+MBC3SRamEnable EQU $0000
+MBC3RomBank EQU $2000
+MBC3SRamBank EQU $4000
+MBC3LatchClock EQU $6000
+MBC3RTC EQU $a000
+
+SRAM_DISABLE EQU $00
+SRAM_ENABLE EQU $0a
+
+NUM_SRAM_BANKS EQU 4
+
+RTC_S EQU $08 ; Seconds 0-59 (0-3Bh)
+RTC_M EQU $09 ; Minutes 0-59 (0-3Bh)
+RTC_H EQU $0a ; Hours 0-23 (0-17h)
+RTC_DL EQU $0b ; Lower 8 bits of Day Counter (0-FFh)
+RTC_DH EQU $0c ; Upper 1 bit of Day Counter, Carry Bit, Halt Flag
+ ; Bit 0 Most significant bit of Day Counter (Bit 8)
+ ; Bit 6 Halt (0=Active, 1=Stop Timer)
+ ; Bit 7 Day Counter Carry Bit (1=Counter Overflow)
+
+; interrupt flags
+VBLANK EQU 0
+LCD_STAT EQU 1
+TIMER EQU 2
+SERIAL EQU 3
+JOYPAD EQU 4
+
+; OAM attribute flags
+OAM_PALETTE EQU %111
+OAM_TILE_BANK EQU 3
+OAM_OBP_NUM EQU 4 ; Non CGB Mode Only
+OAM_X_FLIP EQU 5
+OAM_Y_FLIP EQU 6
+OAM_PRIORITY EQU 7 ; 0: OBJ above BG, 1: OBJ behind BG (colors 1-3)
+
+
+; Hardware registers
+rJOYP EQU $ff00 ; Joypad (R/W)
+rSB EQU $ff01 ; Serial transfer data (R/W)
+rSC EQU $ff02 ; Serial Transfer Control (R/W)
+rSC_ON EQU 7
+rSC_CGB EQU 1
+rSC_CLOCK EQU 0
+rDIV EQU $ff04 ; Divider Register (R/W)
+rTIMA EQU $ff05 ; Timer counter (R/W)
+rTMA EQU $ff06 ; Timer Modulo (R/W)
+rTAC EQU $ff07 ; Timer Control (R/W)
+rTAC_ON EQU 2
+rTAC_4096_HZ EQU 0
+rTAC_262144_HZ EQU 1
+rTAC_65536_HZ EQU 2
+rTAC_16384_HZ EQU 3
+rIF EQU $ff0f ; Interrupt Flag (R/W)
+rNR10 EQU $ff10 ; Channel 1 Sweep register (R/W)
+rNR11 EQU $ff11 ; Channel 1 Sound length/Wave pattern duty (R/W)
+rNR12 EQU $ff12 ; Channel 1 Volume Envelope (R/W)
+rNR13 EQU $ff13 ; Channel 1 Frequency lo (Write Only)
+rNR14 EQU $ff14 ; Channel 1 Frequency hi (R/W)
+rNR21 EQU $ff16 ; Channel 2 Sound Length/Wave Pattern Duty (R/W)
+rNR22 EQU $ff17 ; Channel 2 Volume Envelope (R/W)
+rNR23 EQU $ff18 ; Channel 2 Frequency lo data (W)
+rNR24 EQU $ff19 ; Channel 2 Frequency hi data (R/W)
+rNR30 EQU $ff1a ; Channel 3 Sound on/off (R/W)
+rNR31 EQU $ff1b ; Channel 3 Sound Length
+rNR32 EQU $ff1c ; Channel 3 Select output level (R/W)
+rNR33 EQU $ff1d ; Channel 3 Frequency's lower data (W)
+rNR34 EQU $ff1e ; Channel 3 Frequency's higher data (R/W)
+rNR41 EQU $ff20 ; Channel 4 Sound Length (R/W)
+rNR42 EQU $ff21 ; Channel 4 Volume Envelope (R/W)
+rNR43 EQU $ff22 ; Channel 4 Polynomial Counter (R/W)
+rNR44 EQU $ff23 ; Channel 4 Counter/consecutive; Inital (R/W)
+rNR50 EQU $ff24 ; Channel control / ON-OFF / Volume (R/W)
+rNR51 EQU $ff25 ; Selection of Sound output terminal (R/W)
+rNR52 EQU $ff26 ; Sound on/off
+rLCDC EQU $ff40 ; LCD Control (R/W)
+rSTAT EQU $ff41 ; LCDC Status (R/W)
+rSCY EQU $ff42 ; Scroll Y (R/W)
+rSCX EQU $ff43 ; Scroll X (R/W)
+rLY EQU $ff44 ; LCDC Y-Coordinate (R)
+rLYC EQU $ff45 ; LY Compare (R/W)
+rDMA EQU $ff46 ; DMA Transfer and Start Address (W)
+rBGP EQU $ff47 ; BG Palette Data (R/W) - Non CGB Mode Only
+rOBP0 EQU $ff48 ; Object Palette 0 Data (R/W) - Non CGB Mode Only
+rOBP1 EQU $ff49 ; Object Palette 1 Data (R/W) - Non CGB Mode Only
+rWY EQU $ff4a ; Window Y Position (R/W)
+rWX EQU $ff4b ; Window X Position minus 7 (R/W)
+rKEY1 EQU $ff4d ; CGB Mode Only - Prepare Speed Switch
+rVBK EQU $ff4f ; CGB Mode Only - VRAM Bank
+rHDMA1 EQU $ff51 ; CGB Mode Only - New DMA Source, High
+rHDMA2 EQU $ff52 ; CGB Mode Only - New DMA Source, Low
+rHDMA3 EQU $ff53 ; CGB Mode Only - New DMA Destination, High
+rHDMA4 EQU $ff54 ; CGB Mode Only - New DMA Destination, Low
+rHDMA5 EQU $ff55 ; CGB Mode Only - New DMA Length/Mode/Start
+rRP EQU $ff56 ; CGB Mode Only - Infrared Communications Port
+rBGPI EQU $ff68 ; CGB Mode Only - Background Palette Index
+rBGPD EQU $ff69 ; CGB Mode Only - Background Palette Data
+rOBPI EQU $ff6a ; CGB Mode Only - Sprite Palette Index
+rOBPD EQU $ff6b ; CGB Mode Only - Sprite Palette Data
+rUNKNOWN1 EQU $ff6c ; (FEh) Bit 0 (Read/Write) - CGB Mode Only
+rSVBK EQU $ff70 ; CGB Mode Only - WRAM Bank
+rUNKNOWN2 EQU $ff72 ; (00h) - Bit 0-7 (Read/Write)
+rUNKNOWN3 EQU $ff73 ; (00h) - Bit 0-7 (Read/Write)
+rUNKNOWN4 EQU $ff74 ; (00h) - Bit 0-7 (Read/Write) - CGB Mode Only
+rUNKNOWN5 EQU $ff75 ; (8Fh) - Bit 4-6 (Read/Write)
+rUNKNOWN6 EQU $ff76 ; (00h) - Always 00h (Read Only)
+rUNKNOWN7 EQU $ff77 ; (00h) - Always 00h (Read Only)
+rIE EQU $ffff ; Interrupt Enable (R/W)
+
--- /dev/null
+++ b/constants/misc_constants.asm
@@ -1,0 +1,9 @@
+A_BUTTON EQU %00000001
+B_BUTTON EQU %00000010
+SELECT EQU %00000100
+START EQU %00001000
+D_RIGHT EQU %00010000
+D_LEFT EQU %00100000
+D_UP EQU %01000000
+D_DOWN EQU %10000000
+
--- a/main.asm
+++ b/main.asm
@@ -7710,7 +7710,7 @@
ld [$cd50], a
ld a, $4c
call Predef
- ld a, BTN_RIGHT | BTN_LEFT | BTN_UP | BTN_DOWN
+ ld a, D_RIGHT | D_LEFT | D_UP | D_DOWN
ld [wJoypadForbiddenButtonsMask], a
xor a
ldh [$b4], a
@@ -8822,7 +8822,7 @@
ld a, $2d
call Predef ; indirect jump to Func_5a5f (5a5f (1:5a5f))
ld a, [$ffb5]
- and BTN_A | BTN_B ; $3
+ and A_BUTTON | B_BUTTON
jr z, .asm_3872
pop af
ld [H_DOWNARROWBLINKCNT2], a ; $ff8c
@@ -13183,7 +13183,7 @@
_GetJoypadState: ; c000 (3:4000)
ld a, [H_JOYPADSTATE]
- cp BTN_A | BTN_B | BTN_SELECT | BTN_START ; soft reset sequence
+ cp A_BUTTON | B_BUTTON | SELECT | START ; soft reset sequence
jp z, HandleJoypadResetButtons
ld b, a
ld a, [H_OLDPRESSEDBUTTONS]