76 lines
1.4 KiB
ArmAsm
76 lines
1.4 KiB
ArmAsm
.include "lib/variables.s"
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.org $c000 ; $c000 for 16k ROM
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; libraries
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.include "lib/kernel.s"
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reset sei
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cld
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lda #<irq
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sta irq_vector
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lda #>irq
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sta irq_vector+1
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lda #$E0
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sta vidm
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lda #$60
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sta cursor_delay
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lda #$06
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sta cursor_delay_interval
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lda #$20
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sta color
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lda #$80
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sta cursor_speed
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lda #$ff
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sta cursor_x_previous
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sta cursor_y_previous
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stz cursor_x
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stz cursor_y
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stz cursor_value
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stz cursor_speed_count
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stz cursor_delay_count
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stz cursor_delay_switch
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stz typelength
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stz keyboard_current
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stz keyboard_previous
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stz system_register
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stz soft_system_register
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jsr kernel_init
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loop jmp loop
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irq_jump jmp (irq_vector)
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.org $fffa
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.addr $0f00
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.addr reset
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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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keyboard_port = $bd00
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system_register = $bc00
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.end |