From: Will Sowerbutts <will@sowerbutts.com>
Date: Fri, 26 Jun 2015 19:39:08 +0000 (+0100)
Subject: zeta-v2: Implement _trap_reboot
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=3df376857e467363d5b9bd4f4744a1aa905d2b87;p=FUZIX.git

zeta-v2: Implement _trap_reboot
---

diff --git a/Kernel/platform-zeta-v2/zeta-v2.s b/Kernel/platform-zeta-v2/zeta-v2.s
index 9e529bc5..0ace3cd9 100644
--- a/Kernel/platform-zeta-v2/zeta-v2.s
+++ b/Kernel/platform-zeta-v2/zeta-v2.s
@@ -16,6 +16,7 @@
 	.globl platform_interrupt_all
 	.globl mpgsel_cache
 	.globl _kernel_pages
+	.globl _trap_reboot
 
         ; imported symbols
         .globl _ramsize
@@ -279,6 +280,12 @@ _program_vectors:
 
 	jr map_kernel
 
+_trap_reboot:
+        di
+        xor a                           ; ROM starts at page 0
+        out (MPGSEL_0), a               ; map ROM to low 16K
+        jp 0                            ; jump into ROM
+
 ;=========================================================================
 ; Memory management
 ; - kernel pages:     32 - 34