IBM XT 5160

Notes:
ST(O) = Current Stack top
ST(i) = i
th
register below Stack top
d
= Destination
O-Destination is ST(O)
I-Destination is ST(i)
P= POP
O-NoPop
I-Pop ST(O)
R
= Reverse
O-Destination (op) Source
I-Source (op) Destination
For FSQRT: -O~ST(O) ~ +00
For FSCALE: -215~ST(I)<+ 2
15
and ST(I) interger
For F2XMl: 0 ~ST(O) ~2-1
For FYL2X: O<St(O)<oo - oo<ST(I)< +00
For FYL2XPl: 0< IST(O) I «2-/2)/2 - oo<ST(I)<oo
For FPTAN: 0~ST(0)<'1T/4
For FPATAN: O~ST(O)<ST(I)<+oo
Instruction Set 6-31 -