motley2659
Member
- Joined
- Feb 19, 2013
- Messages
- 48
Hey guys,
I am the winner of this sweet IBM 5140 lot on ebay
http://www.ebay.com/itm/IBM-039-s-FIRST-Laptop-Computer-Vintage-Convertible-PC-5140-model-2-Plus-Extras-/251569962555?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2047675.l2557&nma=true&si=mVE1D%252B4lfzYyhajmgqRY7FMoftk%253D&orig_cvip=true&rt=nc
and I have a few questions that I haven't found answers in my research:
1) Are the ports on the serial/parallel slice bidirectional? If not, can they be modified like the PCjr?
2) The technical documentation states that the system has a Real Time Clock (RTC). Is this backed by a coin cell or the system's NiCad battery pack?
3) Is the 8088 processor on this thing socketed (like the PC/XT) so that it can be replaced with a NEC V20? If so, is there a list of programs and games made incompatible by this upgrade?
4) The system comes with IBM PC DOS 3.2. Is there any advantage for upgrading to PC DOS 5.0 on this machine?
Feel free to add any other suggestions or recommendations on software, upgrades, etc.
I am the winner of this sweet IBM 5140 lot on ebay
http://www.ebay.com/itm/IBM-039-s-FIRST-Laptop-Computer-Vintage-Convertible-PC-5140-model-2-Plus-Extras-/251569962555?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2047675.l2557&nma=true&si=mVE1D%252B4lfzYyhajmgqRY7FMoftk%253D&orig_cvip=true&rt=nc
and I have a few questions that I haven't found answers in my research:
1) Are the ports on the serial/parallel slice bidirectional? If not, can they be modified like the PCjr?
2) The technical documentation states that the system has a Real Time Clock (RTC). Is this backed by a coin cell or the system's NiCad battery pack?
3) Is the 8088 processor on this thing socketed (like the PC/XT) so that it can be replaced with a NEC V20? If so, is there a list of programs and games made incompatible by this upgrade?
4) The system comes with IBM PC DOS 3.2. Is there any advantage for upgrading to PC DOS 5.0 on this machine?
Feel free to add any other suggestions or recommendations on software, upgrades, etc.