-; gamate symbols
-
-;.p02
-
-LCD_WIDTH = 160
-LCD_HEIGHT = 152
-
-lcd_base = $5000
-lcd_mode = $5001
-lcd_mode_y_increment = $40
-lcd_x_pos = $5002
-lcd_x_pos_plane2_flag =$80
-lcd_y_pos = $5003
-lcd_x = $5004
-lcd_y = $5005
-lcd_read = $5006
-lcd_data = $5007
-
-audio_base =$4000
-
-controls = $4400
-; active low
-up=1
-down=2
-left=4
-right=8
-button_a=$10
-button_b=$20
-start=$40
-select=$80
-
-cart_main = $6020
-;cart_nmi = $6023
-cart_irq = $6026 ; 135 hz
-cart_font = $6029
-
-nmi_enable = $c
-nmi_4800 = $a
-
-_f009 = $f009 ; wait 1/60s
-_f00c = $f00c ; install font
-_f012 = $f012 ; write screen
+;-------------------------------------------------------------------------------
+; gamate.inc
+;
+; Gamate system specific definitions
+;
+; (w) 2015 Groepaz/Hitmen (groepaz@gmx.net)
+; based on technical reference by PeT (mess@utanet.at)
+;-------------------------------------------------------------------------------
+
+; look at gamate.h for comments, they are not duplicated here
+
+AUDIO_BASE = $4000
+
+JOY_DATA = $4400
+
+JOY_DATA_UP = $01
+JOY_DATA_DOWN = $02
+JOY_DATA_LEFT = $04
+JOY_DATA_RIGHT = $08
+JOY_DATA_FIRE_A = $10
+JOY_DATA_FIRE_B = $20
+JOY_DATA_START = $40
+JOY_DATA_SELECT = $80
+
+LCD_WIDTH = 160
+LCD_HEIGHT = 152
+
+LCD_BASE = $5000
+LCD_MODE = $5001
+LCD_XPOS = $5002
+LCD_YPOS = $5003
+LCD_X = $5004
+LCD_Y = $5005
+LCD_READ = $5006
+LCD_DATA = $5007
+
+LCD_MODE_INC_X = $00
+LCD_MODE_INC_Y = $40
+LCD_XPOS_PLANE1 = $00
+LCD_XPOS_PLANE2 = $80
+
+; constants for the conio implementation
+charsperline = (LCD_WIDTH / 8)
+screenrows = (LCD_HEIGHT / 8)
+
+CH_HLINE = 1
+CH_VLINE = 2
+
+COLOR_WHITE = 0
+COLOR_GREY2 = 1
+COLOR_GREY1 = 2
+COLOR_BLACK = 3
+
+;-------------------------------------------------------------------------------
+; bios zp usage:
+;
+; 06/07 address of character set bitplane 1
+; 08/09 address of character set bitplane 2
+; 0a nmi $4800 echo
+; 0b irq counter
+; 0c nmi call cart nmi
+; 0e/0f/10/11 big endian irq counter
+; 15/16/17 ?/xpos/ypos
+;
+; e8 nmi reset to $ff
+;
+
+ZP_NMI_4800 = $0a
+ZP_NMI_ENABLE = $0c