coco2cart: startup paranoia

diff --git a/Kernel/platform-coco2cart/crt0.s b/Kernel/platform-coco2cart/crt0.s
index e3a00c2..dc2a306 100644 (file)
--- a/Kernel/platform-coco2cart/crt0.s
+++ b/Kernel/platform-coco2cart/crt0.s
@@ -18,6 +18,8 @@
 start:
                orcc #0x10              ; interrupts definitely off
                lds #$0100              ; not written by loader
+               clr $ffde               ; make sure ROM is mapped
+               clr $ffd4               ; low 32K in low 32K
                jsr load_image          ; load the rest of the OS from disk
                jmp main