From: luser.droog@nospicedham.gmail.com   
      
   On Sunday, September 13, 2020 at 11:20:43 PM UTC-5, luserdroog wrote:   
      
   > Here's the stack trace on the first one.   
   >   
   > ax:ffff cx:000a dx:0000 bx:0001 sp:f000 bp:1ffc si:0e1a di:0000 ip:046d   
   fl:0004 NC NO NS NZ   
   > 3b(073) cmpwt: d9(331) x:1 y:10 ->fffffff7   
   > ax:ffff cx:000a dx:0000 bx:0001 sp:f000 bp:1ffc si:0e1a di:0000 ip:046f   
   fl:0891 CA OV SN NZ   
   > 7c(174) jl: 02(002) <0>   
   > ax:ffff cx:000a dx:0000 bx:0001 sp:f000 bp:1ffc si:0e1a di:0000 ip:0471   
   fl:0891 CA OV SN NZ   
   > ff(377) grp2w: c0(300) INC ->0000   
   >   
   > The CMP produces fffffff7 which seems like the correct subtraction   
   > extended to 32 bits. But the JL isn't taken.   
   >   
   > Are my flags wrong after the cmpwt instruction?   
      
   I'm pretty sure this *is* wrong. I think I should have Carry but No   
   Overflow. The upper half is clearly the sign extension of the low 15   
   bits so it should not be considered an overflow, I think.   
      
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