Populate repository from old progress; massive cleanup and fixes

src/reset.s

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+; CHIBI PC-09 Prototype #1 Boot ROM -- Reset Handler
+; Copyright (c) 2024-2025 Amber Zeller, Gale Faraday
+; Licensed under MIT
+
+  INCLUDE "hardware.inc"
+  INCLUDE "serial.inc"
+  INCLUDE "memtest.inc"
+  INCLUDE "version.inc"
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;
+;; Hardware Initialization Routines
+;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+  SECTION RESET
+
+  EXPORT RESET
+
+RESET
+  orcc #$50    ; Mask IRQ and FIRQ
+  jsr INITUART ; Initialize serial console
+
+CLRSTACK
+  ; Initialize the system stack
+  lda #$00           ; Initialize A & X to zero out the stack
+  ldx #$0000
+NEXT@
+  sta STACK_BOTTOM,x ; Write a zero and progress to the next byte
+  leax 1,x
+  cmpx #STACK_DEPTH  ; See if we're at the top of the stack yet
+  blo NEXT@          ; Loop if we aren't at the end yet
+  lds #STACK_TOP     ; Set S to top of newly cleared stack
+
+BOOTSCR
+  ldx #VERMSG
+  jsr POUTZSTR
+
+; Progress to POST
+POST
+  jsr RAMTEST
+
+HALT
+  sync                 ; Halt and wait for interrupts
+  bra HALT