msx1: use the first disk buffer as the bounce for the vector copy

diff --git a/Kernel/platform-msx1/msx1.s b/Kernel/platform-msx1/msx1.s
index c427b3d..c52356b 100644 (file)
--- a/Kernel/platform-msx1/msx1.s
+++ b/Kernel/platform-msx1/msx1.s
@@ -9,9 +9,9 @@
             .globl init_hardware
             .globl interrupt_handler
             .globl _program_vectors
-           .globl _copy_vectors
            .globl _set_initial_map
            .globl _need_resched
+           .globl _copy_vectors
 
            ; video driver
            .globl _vtinit
@@ -30,6 +30,9 @@
 
            .globl find_ram
 
+           ; We use buffer 0 data as a bounce buffer early in boot
+           .globl _bufpool
+
             ; debug symbols
             .globl outcharhex
             .globl outhl, outde, outbc
@@ -163,8 +166,7 @@ vdp_setup:
 
            ld a, #'4'
            out (0x2F), a
-
-            ret
+           ret
 
 _program_vectors:
            ret
@@ -180,9 +182,13 @@ outchar:
            pop af
             ret
 
+;
+;      Called early in boot to get the vectors and stubs into both banks
+;      Use the data space of the first disk buffer as a bounce buffer
+;
 _copy_vectors:
            ld hl,#0
-           ld de,#s__DISCARD
+           ld de,#_bufpool
            ld bc,#256
            ldir
            call map_process_always