From 38427060c8f781589d7f78148cf6204b97f20d4b Mon Sep 17 00:00:00 2001 From: Thomas Guillermo Albers Raviola Date: Sat, 4 Oct 2025 20:52:39 +0200 Subject: Restructure project --- crt0.asm | 93 ---------------------------------------------------------------- 1 file changed, 93 deletions(-) delete mode 100644 crt0.asm (limited to 'crt0.asm') diff --git a/crt0.asm b/crt0.asm deleted file mode 100644 index 567ab47..0000000 --- a/crt0.asm +++ /dev/null @@ -1,93 +0,0 @@ -#include - - .module crt0 - .globl _main - - .area _HEADER (ABS) - ;; Reset vector - .org 0x0000 - ld SP, #0x00 - xor A - ld I, A - jp init - ;; ISR table - .org 0x0010 -_ctc0_isr_ptr: - .dw #0 -_ctc1_isr_ptr: - .dw #0 -_ctc2_isr_ptr: - .dw #0 - .globl _ctc3_isr_ptr -_ctc3_isr_ptr: - .dw #_ctc3_isr - .globl _rx_isr_ptr -_rx_isr_ptr: - .dw #_rx_isr - ;; Init code -init: - xor A - ;; Enable extended memory - out (WIN_0_CTRL), A - ld A, #0b00100000 - out (WIN_1_CTRL), A - ld A, #0b01000000 - out (WIN_2_CTRL), A - ld A, #0b01100000 - out (WIN_3_CTRL), A - - ld A, #SREG_EXT_MEM - out (SREG_CTRL), A - - call gsinit - call _main -1$: - halt - jr 1$ - - ;; Ordering of segments for the linker. - .area _HOME - .area _CODE - .area _INITIALIZER - .area _GSINIT - .area _GSFINAL - - .area _DATA - .area _INITIALIZED - .area _BSEG - .area _BSS - .area _HEAP - - .area _CODE - - .area _GSINIT -gsinit: - ;; Default-initialized global variables. - ld bc, #l__DATA - ld a, b - or a, c - jr Z, zeroed_data - ld hl, #s__DATA - ld (hl), #0x00 - dec bc - ld a, b - or a, c - jr Z, zeroed_data - ld e, l - ld d, h - inc de - ldir -zeroed_data: - ;; Explicitly initialized global variables. - ld bc, #l__INITIALIZER - ld a, b - or a, c - jr Z, gsinit_next - ld de, #s__INITIALIZED - ld hl, #s__INITIALIZER - ldir - -gsinit_next: - - .area _GSFINAL - ret -- cgit v1.2.3