px4plus: initial mods for new IRQ code

This platform uses the banked build so at the moment this can't be built
or tested

diff --git a/Kernel/platform-px4plus/px4plus.s b/Kernel/platform-px4plus/px4plus.s
index 62baf8c..9cea76a 100644 (file)
--- a/Kernel/platform-px4plus/px4plus.s
+++ b/Kernel/platform-px4plus/px4plus.s
@@ -75,9 +75,10 @@ platform_interrupt_all:
 
 ;
 ;      FIXME: this probably needs to be a new "commondata" area so we can
+;      ROM this correctly
 ;
-_kernel_flag:
-           .db 1
+_need_resched:
+           .db 0
 kernel_map:                    ; Last kernel map we were using
            .db 0xA2
 saved_map:                     ; Saved mapping for IRQ entry/exit

diff --git a/Kernel/platform-px4plus/tricks.s b/Kernel/platform-px4plus/tricks.s
index d6f1a56..a667313 100644 (file)
--- a/Kernel/platform-px4plus/tricks.s
+++ b/Kernel/platform-px4plus/tricks.s
@@ -56,10 +56,6 @@ _switchout:
         push iy
         ld (U_DATA__U_SP), sp ; this is where the SP is restored in _switchin
 
-        ; set inint to false
-        xor a
-        ld (_inint), a
-
         ; find another process to run (may select this one again)
        push af
         call _getproc
@@ -159,9 +155,9 @@ not_swapped:
         pop hl ; return code
 
         ; enable interrupts, if the ISR isn't already running
-        ld a, (_inint)
+        ld a, (U_DATA__U_ININTERRUPT)
         or a
-        ret z ; in ISR, leave interrupts off
+        ret nz ; in ISR, leave interrupts off
         ei
         ret ; return with interrupts on