.386P
; VGA I/O ports
STATUS = 03DAh ; status register port
IS_HVSYNC = 01
IS_VSYNC = 08
CRTC = 03D4h ; CRT Controller port
VGAIRQ = 011h ; CRTC porta contenente i bit di gestione IRQ9
VSTART_HI = 0ch ; CRTC bitmap start address high byte
VSTART_LO = 0dh ; CRTC bitmap start address low byte
VSTART_HILO = 0c0dh ; indici combinati
LINE_OFS = 13h ; CRTC physical bitmap width
UNDERLINE = 14h ; CRTC
MODE_CONTROL = 17h ; CRTC
OVERFLOW = 07h ; CRTC overflow register index
MAX_SCAN_LINE = 09h ; CRTC maximum scan line register index
LINE_COMPARE = 18h ; CRTC line comp reg. index (bits 0-7 of
; split screen scan line )
GRAPHICS = 03CEh
FUN_SELECT = 03h ;index in GC of Rotate/Function Select
READ_MAP = 04h ;index in GC of Read Map register
BIT_MASK = 08h ;index in GC of Bit Mask register
ALL_BIT = 0FF08h ; bit mask + all bits ON
MISCELLANEOUS = 06h ; GC
GRAPHICS_MODE = 05h ; GC read/write access mode
DACREAD = 03C7h
DACWRITE = 03C8h
DACDATA = 03C9h
SEQUENCER = 03C4h
MAP_MASK = 02h ;index in SC of Map Mask register
MEMORY_MODE = 04h ; SC text/graphics/chain4
ATTRIBUTE = 03C0h
PEL_PANNING = 33h ;indice PEL panning + display enable (20h)
ATTR_CONTROL = 30h ;indice ATTR control + display enable (20h)
NOSPLITPAN = 20h
PRESET_SCAN = 08h ; offset iniziale di visualizzazione
; write plane selectors ( hi = mask, lo= register index)
WP0 = 0102h
WP1 = 0202h
WP2 = 0402h
WP3 = 0802h
WPA = 0F02h
; values to ROL bit masks while blitting sprite
WWP0 = 8802h
WWP3 = 4402h
WRITEPLANE macro wplane
mov dx,SEQUENCER
mov ax,wplane
out dx,ax
endm
RP0 = 0004h
RP1 = 0104h
RP2 = 0204h
RP3 = 0304h
READPLANE macro rplane
mov dx,GRAPHICS
mov ax,rplane
out dx,ax
endm
WPUT = 0003h
WAND = 0803h
WOR = 1003h
WXOR = 1803h
WRITEMODE macro wmode
mov dx,GRAPHICS
mov ax,wmode
out dx,ax
endm
; modi validi a 256 colori !!!!!
BLITPLANE = 4005h
BLITBLOCK = 4105h
BLITMODE macro bmode
mov dx,GRAPHICS
mov ax,bmode
out dx,ax
endm
; definizioni per il Programmable Interrupt Timer (PIT) chip 8253
PIT0 = 40h ; porta dati del canale 0 (collegato ad IRQ0)
PIT1 = 41h ; canale 1, usato per il refresh della RAM
PIT2 = 42h ; canale 2, collegato allo speaker
PIT_CTRL = 43h ; porta di controllo dell' 8253
T_SET0 = 036h ; canale 0, modo ad onde quadre, leggi/scrivi LSB&MSB
; comando standard per programmare interrupt temporizzato
T_SET2 = 0B6h ; canale 2, modo ad onde quadre, leggi/scrivi LSB&MSB
; comando standard per emettere suono periodico
; (se si attiva l' uscita tramite il keyboard controller)
P_SET2L = 0B6h ; canale 2, modo quadra, leggi/scrivi LSB&MSB
P_SET2S = 096h ; canale 2, modo quadra, leggi/scrivi solo LSB
F8008 = 149 ; valore downcounter per avere una frequenza di 8008Hz
; 149 == 8008 Hz
F18_2 = 0000 ; valore downcounter per avere una frequenza di 18,2 Hz
; (in realta si deve scrivere 0000h nel contatore del chip)
; definizioni dei Programmable Interrupt Controllers
; Master PIC: IRQ0..IRQ7 (con IRQ2 legato allo slave PIC)
PIC0_CTRL = 020h
PIC0_DATA = 021h
; Slave PIC: IRQ8..IRQF
PIC1_CRTL = 0A0h
PIC1_DATA = 0A1h
EOI = 020h ; End Of Interrupt (riabilta tutti gli interrupt sul PIC)
SEOI = 060h ; Specific End Of Interrupt (da usare nel caso di overruns)
; Se mentre si e' in un ISR arriva UN NUOVO IRQ corrispondente
; a quello su cui si sta lavorando, "lo si mette a tacere"
; usando SEOI.
; PARAMETRI DI DESCRIZIONE IMMAGINE VIDEO
; real size (in pixels)
RXWIDTH = 336
RYHEIGHT = 182
INTERSPACE = 12
; virtual size of a display page
VXWIDTH = (RXWIDTH*10)
VYHEIGHT = 364
; tiles on a page
XTILES = 100
YTILES = 14
; tile width & height
TWIDTH = 32
THEIGHT = 26
; tile size
TILESIZE = (TWIDTH*THEIGHT)
; Logical size of visible display window (pixels)
LXWIDTH = RXWIDTH
LYHEIGHT = 182
; X width in addressing unit (nudget)
PXWIDTH = (RXWIDTH/4)
; X width in scanline units (double nudgets)
SXWIDTH = (RXWIDTH/8)
; SCOHEIGHT = altezza della "segnapunti" = 200 - inizio_scoreboard
; + 1 interlinea di sicurezza
SCOHEIGHT = (1+200-LYHEIGHT)
; Logical size of a character bitmap
LCHARX = 8
LCHARY = 8
; spazio occupato da un char in unita di indirizzamento
CHARSIZE = (LCHARX*LCHARY)
; shift equivalente a CHARSIZE
CHARSHIFT = 6
; indirizzo lineare della base della "finestra di memoria" della scheda vga
; equivale all' indirizzo base della finestra "segnapunti" (scoreboard)
SCOBASE = 000A0000h
; base prima pagina
BASE0 = (SCOBASE+(SCOHEIGHT*PXWIDTH))
; base seconda pagina (con un interlinea di sicurezza)
BASE1 = (BASE0+((LYHEIGHT+INTERSPACE)*PXWIDTH))
; base terza pagina
BASE2 = (BASE1+((LYHEIGHT+INTERSPACE)*PXWIDTH))
NUMCHAR = 128
UPDOWN = 2
LEFTRIGHT = 1
PIXSHIFT = 2
PIXMUP = 3
; base offset of next page displayed by _PageFlip
Global _ActiveBase :dword
; base offset of page currently displayed
Global _ViewBase :dword
; base of "scoreboard" window in the lower part of the screen
Global _ScoBase :dword
; array of dwords containing line start displacements
Global _RowStart :dword
Global _SetGameMode: near
; Initialize game mode
; 320x200 planar (mode-x) screen
; with a main 320x182 "game" window
; selectable between 3 overlapping display pages
; and a 320x18 "scoreboard" window
Global _RestoreTextMode: near
; Restores 80x25 color text mode
Global _WaitVR: near
; Waits a full Vertical Retrace Interval
; (it disables interrupts while waiting, use it with care)
Global _DisplayStart: near
; EAX= x_position (bits 0..1 ignored)
; EBX = y_position
; It set the new x,y position inside the display page
; it will be effective at the next _PageFlip
Global _PageFlip: near
; Set the old active page (the one referenced thru _ActiveBase)
; as the new viewable page (the one referenced thru _ViewBase)
; and swaps pointers
; N.B. Is uses TRIPLE buffering (there are 3 display pages)
; and limits the "flipping" rate to 60Hz
; by way of timer channel 0.
Global _SoundOn:byte,_SoundLen:dword,_SoundPtr:dword
Global _DSoundOn:byte,_DSoundLen:dword,_DSoundPtr:dword
Global _RKB:byte
; _RKB is a table of 128 bytes, where the n-th byte
; contains the status of the n-th keyboard key
; bit 0 = 1 == key IS pressed
; 0 == key IS NOT pressed
; bit 1 = 1 == key HAS BEEN pressed since last time you reset
; this bit
; bit 2..7 = always set to zero.
; An irq handler sets/resets bit0 for every key pressed/released
; but ONLY set bit 1 if a key has been pressed
; (you must reset bit1 on your own).
Global _RKBPressed:byte
; set to 1 every time a key is pressed
Global _InstallRKB: near
; installs the bimodal raw keyboard handlers
; ( use _InstallRKB before using the "raw keyboard"
; data structures and functions)
Global _WaitKey: near
; resets the _RKBPressed flag & waits a key press
Global _InstallPWM: near
; installs the PWM pc-speaker drive & timer driven page flipper
; and installs the voc->PWM translation table
; WARNING! The PWM system is still in an early experimental beta stage
; (tried lots of different methods, this one still has some bugs)
Global _Voc2RAW: near
; converts an 8 bit not-compressed mono .VOC file
; to "RAW" encoded data
; You must install a sound driver (i.e. _InstallPWM for the pc-speaker
; driver) to set up the voc->raw translation table
Global _TimerTicks:dword,_SysTicks:dword,_Seconds:dword
; _TimerTicks counts how many 1193180Hz "ticks" have occured
; _SysTicks counte how many 18.2Hz "ticks" have occoured
; _Seconds ... self explanatory, uh?
; To read meaningful values you must activate game mode
; ( call _SetgameMode) or the pwm sound driver.
; RAW KEYBOARD (_RKB) INDEXES
_ESC = 1
_1 = 2
_2 = 3
_3 = 4
_4 = 5
_5 = 6
_6 = 7
_7 = 8
_8 = 9
_9 = 0Ah
_0 = 0Bh
_F1 = 3Bh
_F2 = 3Ch
_F3 = 3Dh
_F4 = 3Eh
_F5 = 3Fh
_F6 = 40h
_F7 = 41h
_F8 = 42h
_F9 = 43h
_F10 = 44h
_F11 = 57h
_F12 = 58h
_ALT = 38h
_CTRL = 1Dh
_LSHIFT = 2Ah
_RSHIFT = 36h
_CAPSLOCK = 3Ah
_TAB = 0Fh
_BACKSPACE = 0Eh
_ENTER = 1Ch
_HOME = 47h
_UP = 48h
_PGUP = 49h
_LEFT = 4Bh
_CENTER = 4Ch
_RIGHT = 4Dh
_END = 4Fh
_DOWN = 50h
_PGDN = 51h
_INS = 52h
_DEL = 53h
_KMINUS = 4Ah
_KPLUS = 4Eh
_SPACEBAR = 39h
