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> > I am also trying to call some assembly routine from a C2 program. I"m able to call to routine in segment 3, it executes correctly, but at the RETS instruction the C-Control reboots. > > To find out what wrong I"m now trying to disassemble the os.hex file! I use the CrossView debugger supplied on the CD (just read the os.hex file as an image). So far I found a jump table for all VM-codes at address 0x394. For the call function (code 62) the entry is 0x3db6. At this address I see a construction to call the assembly routine. However, how it works I haven"t figured out -yet-. It seems R4 and R5 hold the segment and offset to be called, by pushing these on the stack and performing a RETS instruction, the call is made. > > > > > > Hello Eric, > > so what it looks like, this call-routine is verry tricky. > > It seems that the code-block who is pushing the registers R4 and R5 (holding the segment and offset for the call) is only a subroutine, preparing the call-function. > > The call itself is performd in a main routine. > > So you have to look after codeblocks, from where this codeblock is called and have to dissassemble the part of codeblock after the point where the RETS comannd is retuned. > > Best regards > Robert

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