dragon-nx32: dw_transaction to support direct to userspace

diff --git a/Kernel/platform-dragon-nx32/drivewire.s b/Kernel/platform-dragon-nx32/drivewire.s
index 3b90bb8..85962fe 100644 (file)
--- a/Kernel/platform-dragon-nx32/drivewire.s
+++ b/Kernel/platform-dragon-nx32/drivewire.s
@@ -25,21 +25,25 @@
 _dw_transaction:
        pshs    cc,y            ; save caller
        orcc    #0x50           ; stop interrupts
-       ldy     5,s             ; Y = number of bytes to send
-       beq     out@            ; no byte to write - leave
+       tstb                    ; rawflag?
+       beq     skip@           ; nope - then skip switching to process map
+       jsr     map_process_always
+skip@  ldy     5,s             ; Y = number of bytes to send
+       beq     ok@             ; no bytes to write - leave
        jsr     DWWrite         ; send to DW
        ldx     7,s             ; X is receive buffer
        ldy     9,s             ; Y = number of bytes to receive
-       beq     out@            ; no bytes to send - leave
+       beq     ok@             ; no bytes to send - leave
        jsr     DWRead          ; read in that many bytes
        bcs     frame@          ; C set on framing error
        bne     part@           ; Z zet on all bytes received
-out@   ldx     #0              ; no error
+ok@    ldx     #0              ; no error
+out@   jsr     map_kernel
        puls    cc,y,pc         ; return
 frame@ ldx     #-1             ; frame error
-       puls    cc,y,pc         ; return
+       bra     out@
 part@  ldx     #-2             ; not all bytes received!
-       puls    cc,y,pc         ; return
+       bra     out@
 
 _dw_reset:
        ; maybe reinitalise PIA here?