split wram/hram out of constants.asm and start using wram sections

also inadvertently labeling some hard addresses

hram.asm

@@ -0,0 +1,116 @@
+
+H_SPRITEWIDTH           EQU $FF8B ; in bytes
+H_SPRITEINTERLACECOUNTER EQU $FF8B
+H_SPRITEHEIGHT          EQU $FF8C ; in bytes
+H_SPRITEOFFSET          EQU $FF8D
+
+H_SOFTRESETCOUNTER EQU $FF8A ; initialized to 16, decremented each input iteration if the user presses the reset sequence (A+B+S+s). Soft reset when 0 is reached.
+
+; counters for blinking down arrow
+H_DOWNARROWBLINKCNT1 EQU $FF8B
+H_DOWNARROWBLINKCNT2 EQU $FF8C
+
+; Note: the following multiplication and division addresses are used for multiple purposes
+; and so they overlap with each other
+
+H_MULTIPLICAND EQU $FF96 ; 3 bytes, big endian order
+H_MULTIPLIER   EQU $FF99 ; 1 byte
+H_PRODUCT      EQU $FF95 ; 4 bytes, big endian order
+
+H_DIVIDEND     EQU $FF95 ; 4 bytes, big endian order
+H_DIVISOR      EQU $FF99 ; 1 byte
+H_QUOTIENT     EQU $FF95 ; 4 bytes, big endian order
+H_REMAINDER    EQU $FF99 ; 1 byte
+
+; used to convert numbers to decimal
+H_PASTLEADINGZEROES EQU $FF95 ; flag to indicate that a nonzero digit has been printed
+H_NUMTOPRINT        EQU $FF96 ; 3 bytes, big endian order
+H_POWEROFTEN        EQU $FF99 ; 3 bytes, big endian order
+H_SAVEDNUMTOPRINT   EQU $FF9C ; 3 bytes, big endian order (to back out of a subtraction)
+
+H_OLDPRESSEDBUTTONS     EQU $FFB1
+H_NEWLYRELEASEDBUTTONS  EQU $FFB2
+H_NEWLYPRESSEDBUTTONS   EQU $FFB3
+H_CURRENTPRESSEDBUTTONS EQU $FFB4
+
+H_LOADEDROMBANK     EQU $FFB8
+
+; is automatic background transfer during V-blank enabled?
+; if nonzero, yes
+; if zero, no
+H_AUTOBGTRANSFERENABLED EQU $FFBA
+
+TRANSFERTOP    EQU 0
+TRANSFERMIDDLE EQU 1
+TRANSFERBOTTOM EQU 2
+
+; 00 = top third of background
+; 01 = middle third of background
+; 02 = bottom third of background
+H_AUTOBGTRANSFERPORTION EQU $FFBB
+
+; the destination address of the automatic background transfer
+H_AUTOBGTRANSFERDEST EQU $FFBC ; 2 bytes
+
+; temporary storage for stack pointer during memory transfers that use pop
+; to increase speed
+H_SPTEMP EQU $FFBF ; 2 bytes
+
+; source address for VBlankCopyBgMap function
+; the first byte doubles as the byte that enabled the transfer.
+; if it is 0, the transfer is disabled
+; if it is not 0, the transfer is enabled
+; this means that XX00 is not a valid source address
+H_VBCOPYBGSRC EQU $FFC1 ; 2 bytes
+
+; destination address for VBlankCopyBgMap function
+H_VBCOPYBGDEST EQU $FFC3 ; 2 bytes
+
+; number of rows for VBlankCopyBgMap to copy
+H_VBCOPYBGNUMROWS EQU $FFC5
+
+; size of VBlankCopy transfer in 16-byte units
+H_VBCOPYSIZE EQU $FFC6
+
+; source address for VBlankCopy function
+H_VBCOPYSRC EQU $FFC7
+
+; destination address for VBlankCopy function
+H_VBCOPYDEST EQU $FFC9
+
+; size of source data for VBlankCopyDouble in 8-byte units
+H_VBCOPYDOUBLESIZE EQU $FFCB
+
+; source address for VBlankCopyDouble function
+H_VBCOPYDOUBLESRC EQU $FFCC
+
+; destination address for VBlankCopyDouble function
+H_VBCOPYDOUBLEDEST EQU $FFCE
+
+; controls whether a row or column of 2x2 tile blocks is redrawn in V-blank
+; 00 = no redraw
+; 01 = redraw column
+; 02 = redraw row
+H_SCREENEDGEREDRAW EQU $FFD0
+
+REDRAWCOL EQU 1
+REDRAWROW EQU 2
+
+H_SCREENEDGEREDRAWADDR EQU $FFD1
+
+H_RAND1 EQU $FFD3
+H_RAND2 EQU $FFD4
+
+H_FRAMECOUNTER EQU $FFD5 ; decremented every V-blank (used for delays)
+
+; V-blank sets this to 0 each time it runs.
+; So, by setting it to a nonzero value and waiting for it to become 0 again,
+; you can detect that the V-blank handler has run since then.
+H_VBLANKOCCURRED EQU $FFD6
+
+H_CURRENTSPRITEOFFSET EQU $FFDA ; multiple of $10
+
+H_WHOSETURN EQU $FFF3 ; 0 on player’s turn, 1 on enemy’s turn
+
+H_JOYPADSTATE EQU $FFF8
+