Added hardware.s
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51
lib/src/hardware.s
Normal file
51
lib/src/hardware.s
Normal file
@ -0,0 +1,51 @@
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vram_write
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; VRAM Write
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; Writes A to the given Coordinate
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; Input:
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; A => Data
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; X => X Coordinate
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; Y => Y Coordinate
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; Output: (none)
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;vram_write_color
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; VRAM Write Color
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; Writes A to the given Coordinate, but adds 0x40 to X
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; Input:
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; A => Data
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; X => X Coordinate
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; Y => Y Coordinate
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; Output: (none)
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vram_read
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; VRAM Read
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; Reads Data from the given Coordinate
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; Input:
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; X => X Coordinate
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; Y => Y Coordinate
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; Output:
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; A => Data
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vram_dump
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; VRAM Dump
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; Dumps all bytes from VRAM in the given Range
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; to a specified Memory Adress
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; Input:
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; X => Start X Coordinate
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; Y => Start Y Coordnate
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; K1 => End X Coordinate
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; K2 => End Y Coordinate
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; K3 => LOW Memory Pointer
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; K4 => HIGH Memory Pointer
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; Output: (none)
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@ -1,3 +1,4 @@
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video_write
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; Video Write (string)
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; String will be written from a Pointer,
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@ -201,3 +202,6 @@ video_reset
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rts
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video_load_font
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@ -2,16 +2,16 @@
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; Name Address Size Status Comment
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z0 = $0 ; 8 bit
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z0 = $0 ; 8 bit All Purpose 16 bit Zero Page Variable
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z1 = $1 ; 8 bit
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irq_a = $200 ; 8 bit (internal)
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irq_a = $200 ; 8 bit (internal) IRQ Variable Save
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irq_x = $201 ; 8 bit (internal)
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irq_y = $202 ; 8 bit (internal)
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irq_vector = $203 ; 16 bit
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irq_vector = $203 ; 16 bit IRQ 16 bit Jump Vector
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k0 = $205 ; 8 bit
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k1 = $206 ; 8 bit
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k0 = $205 ; 8 bit General Purpose Registers
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k1 = $206 ; 8 bit ...
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k2 = $207 ; 8 bit
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k3 = $208 ; 8 bit
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k4 = $209 ; 8 bit
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@ -19,27 +19,28 @@ k5 = $20a ; 8 bit
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k6 = $20b ; 8 bit
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k7 = $20c ; 8 bit
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keyboard_current = $20d ; 8 bit
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keyboard_previous = $20e ; 8 bit
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keyboard_format = $20f ; 8 bit
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keyboard_arrow = $210 ; 8 bit
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keyboard_modifier = $211 ; 8 bit
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keyboard_current = $20d ; 8 bit Held Keyboard Key, without Formatting (shift, etc.) "Scan Key"
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keyboard_previous = $20e ; 8 bit Previous held "Scan Key"
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keyboard_format = $20f ; 8 bit Formatted Char, from keyboard_current
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keyboard_arrow = $210 ; 8 bit Held Arrow Keys
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keyboard_modifier = $211 ; 8 bit Held Modifier Keys, such as "shift, alt, control"
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cursor_x = $212 ; 8 bit
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cursor_y = $213 ; 8 bit
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cursor_x_previous = $214 ; 8 bit (internal)
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cursor_y_previous = $215 ; 8 bit (internal)
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cursor_value = $216 ; 8 bit
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cursor_speed = $217 ; 8 bit
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cursor_speed_count = $218 ; 8 bit (internal)
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cursor_delay_interval = $219 ; 8 bit
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cursor_x = $212 ; 8 bit Current Cursor X Position
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cursor_y = $213 ; 8 bit Current Cursor Y Position
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cursor_x_previous = $214 ; 8 bit (internal) Previous Cursor X Position
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cursor_y_previous = $215 ; 8 bit (internal) Previous Cursor Y Position
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cursor_value = $216 ; 8 bit
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cursor_speed = $217 ; 8 bit Cursor Blink Speed (in IRQ Ticks)
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cursor_speed_count = $218 ; 8 bit (internal) Cursor Blink Speed Counter
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cursor_delay_interval = $219 ; 8 bit
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cursor_delay = $21a ; 8 bit
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cursor_delay_count = $21b ; 8 bit (internal)
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cursor_delay_switch = $21c ; 8 bit (internal)
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soft_system_register = $21d ; 8 bit (internal)
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color = $2fe ; 8 bit
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color = $2fe ; 8 bit Fore & Background Color
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typelength = $2ff ; 8 bit Length of typebuffer
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typebuffer = $300 ; 256 bit 256 bit, All Purpose Char Buffer
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typelength = $2ff ; 8 bit
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typebuffer = $300 ; 256 bit
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43
main.s
43
main.s
@ -1,10 +1,14 @@
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.include "lib/variables.s"
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.include "lib/variables.s"
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.org $c000 ; $c000 for 16k ROM
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; libraries
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.org $c000 ; $c000 for 16k ROM
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.include "lib/kernel.s"
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.org $f700
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charset .incbin "assets/UTF-8.bin"
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.org $ff00
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reset sei
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cld
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@ -55,22 +59,23 @@ irq_jump jmp (irq_vector)
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.addr irq_jump
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; hardware registers
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vidx = $be00
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vidy = $be01
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vidm = $be02
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vidd = $be03
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porta = $bf80
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portb = $bf81
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ddrb = $bf82
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ddra = $bf83
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t1cl = $bf84
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t1ch = $bf85
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acr = $bf8b
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ifr = $bf8d
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ier = $bf8e
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vidx = $be00
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vidy = $be01
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vidm = $be02
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vidd = $be03
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keyboard_port = $bd00
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system_register = $bc00
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porta = $bf80
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portb = $bf81
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ddrb = $bf82
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ddra = $bf83
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t1cl = $bf84
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t1ch = $bf85
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acr = $bf8b
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ifr = $bf8d
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ier = $bf8e
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keyboard_port = $bd00
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system_register = $bc00
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.end
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