Peter z80.eu
Experienced Member
- Joined
- Apr 21, 2016
- Messages
- 84
For several reasons (not only because of a small speed increase, but also because of the ENTER/LEAVE cpu op-codes) I like to replace an Intel 8086 with a NEC V30, but in this Amstrad 1640 PC, an Intel 8087-2 coprozessor is also installed.
I am now NOT sure if a NEC V30 CPU will work troublefree with an Intel numerical coprozessor, also because there was a NEC version of the coprozessor also. Also, the current installed Intel 8086 has a cooling element glued on it, because there is a small additional circuit installed beside the mainboard for switching 4.77Mhz, 8Mhz and 9.54Mhz (and I guess the 9.54Mhz frequency will warm up the main processor faster). The replacement V30 is a 10Mhz version, which should not need an additional cooling element on it...
So will I get in trouble when replacing the 8086 with the V30 ?
I am now NOT sure if a NEC V30 CPU will work troublefree with an Intel numerical coprozessor, also because there was a NEC version of the coprozessor also. Also, the current installed Intel 8086 has a cooling element glued on it, because there is a small additional circuit installed beside the mainboard for switching 4.77Mhz, 8Mhz and 9.54Mhz (and I guess the 9.54Mhz frequency will warm up the main processor faster). The replacement V30 is a 10Mhz version, which should not need an additional cooling element on it...
So will I get in trouble when replacing the 8086 with the V30 ?