8080fixedbank: note some areas to look at for switching

diff --git a/Kernel/lib/8080fixedbank-core.s b/Kernel/lib/8080fixedbank-core.s
index 94321ea..0ee44ab 100644 (file)
--- a/Kernel/lib/8080fixedbank-core.s
+++ b/Kernel/lib/8080fixedbank-core.s
@@ -30,6 +30,7 @@ _platform_switchout:
        push h
        lhld .areg
        push h
+       ! Do we need to save block1->block3+2 (ie do we do 32bit * and / ???
        lxi h,0
        dad sp
        shld U_DATA__U_SP       ! Save the sp for a switch in
@@ -161,13 +162,13 @@ skip_copyback:
        !
        !       Recover our parent frame pointer and return code
        !
-       !       FIXME: do we need to handle .fra .trapproc or .retadr1 ?
-       !       Q: .fra and longs ?
-       !       probably we do need to save block1-block3 (12 bytes)
+       !       probably we still need to save block1-block3 (12 bytes)
+       !       used by .mli4/.dvi4. Would be good to make them do their
+       !       own saves so the cost is paid in the right place
        !
        pop h
        mov l,a
-       sta .areg
+       sta .areg       ! FIXME: add a pad byte to .areg instead
        pop h
        shld .tmp1
        pop h