From 734ab3852a4b3f315a459e97625540656d249b37 Mon Sep 17 00:00:00 2001
From: Nero <41307858+nero@users.noreply.github.com>
Date: Sat, 15 Aug 2020 21:02:30 +0000
Subject: [PATCH] Remove skeleton of rom-based kernel

---
 kernel/intr.asm | 70 -------------------------------------------------
 rom/kernel.asm  | 68 -----------------------------------------------
 2 files changed, 138 deletions(-)
 delete mode 100644 kernel/intr.asm
 delete mode 100644 rom/kernel.asm

diff --git a/kernel/intr.asm b/kernel/intr.asm
deleted file mode 100644
index fcd0227..0000000
--- a/kernel/intr.asm
+++ /dev/null
@@ -1,70 +0,0 @@
-	; Get pointer to interrupt vector
-	; IN	al	number
-	; OUT	0:bx	ptr to vector
-intr_ptr:
-	xor bh, bh
-	mov bl, al
-	add bx, bx
-	add bx, bx
-	ret
-
-	; Set interrupt vector
-	; IN	al	number
-	;	ds:dx	ptr
-intr_set:
-	push bx
-	call intr_ptr
-	ss mov [bx], dx
-	ss mov [bx+2], ds
-	pop bx
-	ret
-
-	; Get interrupt vector
-	; IN	al	number
-	; OUT	es:bx	ptr
-intr_get:
-	call intr_ptr
-	ss mov es, [bx+2]
-	ss mov bx, [bx]
-	ret
-
-	; Save BIOS vectors
-	; Trashes ax, cx, bx, ds
-intr_backup:
-	mov cx, 0x20
-	xor bx, bx
-	mov ds, bx
-.loop:	; load segment
-	mov ax, [bx+2]
-	; skip transfer if not pointing to BIOS
-	cmp ax, 0xA000
-	jc .skip
-	; store segment
-	mov [bx+ivt2+2], ax
-	; copy offset
-	mov ax, [bx]
-	mov [bx+ivt2], ax
-	; iterate to next vector
-.skip:	add bx, 4
-	loop .loop
-	ret
-
-	; Restore BIOS vectors
-intr_restore:
-	mov cx, 0x20
-	xor bx, bx
-	mov ds, bx
-.loop:	; load segment
-	mov ax, [bx+ivt2+2]
-	; skip if not a vector to BIOS
-	cmp ax, 0xA000
-	jc .skip
-	; store segment
-	mov [bx+2], ax
-	; copy offset
-	mov ax, [bx+ivt2]
-	mov [bx], ax
-	; iterate to next vector
-.skip:	add bx, 4
-	loop .loop
-	ret
diff --git a/rom/kernel.asm b/rom/kernel.asm
deleted file mode 100644
index 2dcf719..0000000
--- a/rom/kernel.asm
+++ /dev/null
@@ -1,68 +0,0 @@
-	cpu 8086
-	org 0x0000
-
-	db 0x55, 0xAA
-	db 0x00
-	jmp near init
-
-	times (0x18 - ($-$$)) db 0
-	dw 0
-	dw pnp
-
-pnp:	db "$PnP"
-	db 1 ; version 1
-	db 2 ; 2 * 16 length
-	dw 0 ; offset of next header
-	db 0
-	db 0 ; checksum (filled by fix-rom)
-	dd 0 ; device identifier
-	dw 0 ; manufacturer string
-	dw name ; product name string
-	db 0,0,0 ; device type string
-	db 0x20 ; device indicator, bit for "read cacheable" set
-	dw 0 ; boot connection vector
-	dw 0 ; boot disconnect vector
-	dw boot ; bootstrap entry point
-	dw 0 ; reserved
-
-	; zero for setting sreg without using reg
-zero:	dw 0
-
-name:	db "rdos", 0
-
-init:	push ds
-
-	; DS := 0
-	mov ds, [cs:zero]
-	; set entry points vectors
-	mov word [0x19*4], boot
-	mov word [0x19*4+2], cs
-
-	pop ds
-	retf
-
-	; entry point on boot, preempting disks
-	; this also doubles as entry point for reboot
-boot:	xor ax, ax
-	mov ss, ax
-	mov sp, stack
-
-	int 3
-
-hlt:	hlt
-	jmp hlt
-
-	%include "kernel/intr.asm"
-
-	align 512
-
-absolute 0x400
-	resb (0x501 - ($-$$))
-
-	; copy of the first 32 interrupt vectors
-ivt2:	resd 0x20
-
-	; 8kb stack
-	alignb 2
-	resw 0x2000
-stack: