diff --git a/kernel/execrh.asm b/kernel/execrh.asm
index cbd8952..1bb8545 100644
--- a/kernel/execrh.asm
+++ b/kernel/execrh.asm
@@ -57,8 +57,15 @@ segment	_TEXT
                 mov     ax, [si+6]      ; construct strategy address
                 mov     [bp+8], ax    
 
+                push si                 ; the bloody fucking RTSND.DOS 
+                push di                 ; driver destroys SI,DI (tom 14.2.03)
+
                 call    far[bp+8]       ; call far the strategy
 
+                pop di 
+                pop si
+                                
+
 		mov     ax,[si+8]       ; construct 'interrupt' address
                 mov     [bp+8],ax       ; construct interrupt address 
                 call    far[bp+8]       ; call far the interrupt