combined boot.s into cstartup.s

src/kernel/boot.s

@@ -1,58 +0,0 @@
-//; SPDX-License-Identifier: MIT
-//;
-//; boot/boot.s
-//;      Boot code for Sentinel 65X
-//;
-//; Copyright <20> 2024 Kyle J Cardoza <Kyle.Cardoza@icloud.com>
-
-#include "sentinel65x.h"
-
-	.extern __program_root_section
-
-	.section boot, noreorder
-    .asciz "WDC"
-w65c265s_init:
-    // Disable interrupts
-    sei
-    stz UIER
-    stz TIER
-    stz EIER
-    short_a
-    long_i
-
-    // We reset the VERA at boot. So P4.2 is an output, held 
-    // low until later in the boot sequence.
-    lda #1 << 2
-    trb PD4
-    tsb PDD4
-
-    // Now we delay a while.
-    ldy ##0x0FFF
-delay_y
-    dey
-    bne delay_y
-
-    // Enable all the in-use chip select lines.
-    lda #0b11110011
-    sta PCS7
-
-	// Disable the on-CPU ROM
-	w65c265s_rom_off
-
-	// Disable the on-CPU RAM
-	w65c265s_sram_off
-
-    ; Set P5.4 and P5.5 as output
-    lda #0b00110000
-    trb PDD5
-    tsb PDD5
-    trb PD5
-
-    ; Set P6.1 as output
-    lda #0b00000010
-    trb PDD6
-    tsb PDD6
-    trb PD6
-
-    // And we are booted enough to jump to high ROM.
-    jmp long:__program_root_section

src/kernel/cstartup.s

@@ -20,23 +20,57 @@
 #include "macros.h"
 #include "65c816.h"
 #include "w65c265s.h"
+#include "65c816.h"
 
-;;; ***************************************************************************
-;;;
-;;; __program_start - actual start point of the program
-;;;
-;;; Set up CPU stack, ini
-#include "65c816.h"tialize sections and call main().
-;;; You can override this with your own routine, or tailor it as needed.
-;;; The easiest way to make custom initialization is to provide your own
-;;; __low_level_init which gets called after stacks have been initialized.
-;;;
-;;; ***************************************************************************
-
-              .section code, noreorder
+	.section boot, noreorder
 	.pubweak __program_root_section
 
 __program_root_section:
+	.asciz "WDC"
+w65c265s_init:
+	// Disable interrupts
+	sei
+	stz UIER
+	stz TIER
+	stz EIER
+	short_a
+	long_i
+
+	// We reset the VERA at boot. So P4.2 is an output, held 
+	// low until later in the boot sequence.
+	lda #1 << 2
+	trb PD4
+	tsb PDD4
+
+	// Now we delay a while.
+	ldy ##0x0FFF
+delay_y
+	dey
+	bne delay_y
+
+	// Enable all the in-use chip select lines.
+	lda #0b11110011
+	sta PCS7
+
+	// Disable the on-CPU ROM
+	w65c265s_rom_off
+
+	// Disable the on-CPU RAM
+	w65c265s_sram_off
+
+	; Set P5.4 and P5.5 as output
+	lda #0b00110000
+	trb PDD5
+	tsb PDD5
+	trb PD5
+
+	; Set P6.1 as output
+	lda #0b00000010
+	trb PDD6
+	tsb PDD6
+	trb PD6
+
+
 	wdm 	  #0x80
 	clc
 	xce                   ; native 16-bit mode
@@ -53,7 +87,7 @@ __program_root_section:
 	plb                   ; set data bank
 
 ;;; **** Initialize data sections if needed.
-              .section code, noroot, noreorder
+	.section boot, noroot, noreorder
 	.pubweak __data_initialization_needed
 	.extern __initialize_sections
 
@@ -69,7 +103,7 @@ __data_initialization_needed:
 	jsl     long:__initialize_sections
 
 ;;; **** Initialize streams if needed.
-              .section code, noroot, noreorder
+	.section boot, noroot, noreorder
 	.pubweak __call_initialize_global_streams
 	.extern __initialize_global_streams
 
@@ -77,7 +111,7 @@ __call_initialize_global_streams:
 	jsl     long:__initialize_global_streams
 
 ;;; **** Initialize heap if needed.
-              .section code, noroot, noreorder
+	.section boot, noroot, noreorder
 	.pubweak __call_heap_initialize
 	.extern __heap_initialize, __default_heap
 
@@ -96,7 +130,7 @@ __call_heap_initialize:
 
 	wdm 	  #0x81
 
-              .section code, root, noreorder
+	.section boot, root, noreorder
 	lda     ##0           ; argc = 0
 	jsl     long:main
 	jmp     long:exit

src/kernel/main.c

@@ -6,5 +6,14 @@
 // Copyright © 2024 Kyle J Cardoza <Kyle.Cardoza@icloud.com>
 
 void main(void) {
+
+// Light Red LED
+	__asm(
+"		sep #0x20\n"
+"    	lda #0b00010000\n"
+"    	tsb 0x00DF21\n"
+"		rep #0x20\n"
+	);
+
     for (;;) {}
 }