I just tried booting the UR-2 by itself the normal way without the expansion pack.
It runs and looks normal, and says version 2.06. The archived copy says version 2.12. On Sun, Oct 11, 2020, 4:18 PM Brian White <b.kenyo...@gmail.com> wrote: > I have here a PG Design ROM expansion that fits T102. > > The unit has 4 molex sockets with the 100/200 pinout to take standard > option roms, and 4 regular dip sockets with apparently regular 27C256 > pinout. > > All 4 regular sockets are filled with this Sardine Plus, which look like > standard ceramic uv-erasable 27C256. I haven't peeled up the stickers but > you can see the shape of the glass window under the sticker. > > The Molex sockets have UR2 and Multiplan. > > The option rom connection is kind of interesting. It uses a bog standard > chip carrier with a very custom looking part hot-glued to it. > > The board has a button cell battery just like PG Design ram expansions. On > the ram expansions the battery is to preserve the ram. There is no ram (nor > any place for ram) on this board and no system bus connection, just the > option rom connection. I did look on both sides of the board. I guess it > must just be to remember the currently selected rom? > > Or maybe the 4 standard sockets can also be used for ram in a different > configuration of the same board? There is a 2nd unpopulated 4 pin header > that could be a system bus connection I guess. > > 2 questions, > > Has this version of Sardine been archived yet? Shall I dump those 4 > eproms? I only know of a ram/disk version, not a version that comes on 4 > roms. This lot came with the original manuals for UR2 and Sardine and > thebrest of the Travelling Software stuff in UR2, but nothing about the > expansion board. Neither the UR2 nor Sardine books says anything about a > version of Sardine entirely in rom. The directions only include directions > for a rom version that comes in the form of a single rom and a disk, or a > ram version that comes in the form of 2 disks. And note about using Sardine > from UR-2, in which case you need UR-2 plus the 2 disks for the RAM > version. None of those 3 possible cases covers this thing with 4 roms and > no disks. > > I wonder if this copy of UR-2 is special too? How could it make use of > these roms? The normal UR-2 must just look for a file on a TPDD, which this > isn't? So either all copies of UR-2 also check for the possible existence > of this hardware and just silently fail over to looking for TPDD when they > don't see it, or this particular copy is special for this hardware and this > Sardine kit? I'll dump this UR-2 to compare with the standard archived one. > > Which leads to question 2, > > Anyone know how to activate this board? I put a new battery in it and > tried "call 63013,1" but it has no apparent useful effect. The screen just > goes back to the main menu. No new menu entry for UR-2 or PLAN or an > anything else. Available ram didn't drop. The lot came with a box of TS > books for UR-2 and each of the individual apps in it. Those include only > the normal directions like when you just have a single UR-2 rom right in > the option rom socket the normal way. IE call 63013,1 , nothing about the > expansion pack. > > https://photos.app.goo.gl/5y9FpfrhPKrqkPXRA > > Also my FlexROM did it's job. This 102 (not the one that came with the > lot) has the wire hooked up so that REX provides the main rom. Normally > that would mean you could no longer remove the REX. But I just connected > the 2 wires in the optrom bay, which essentially re-connects the internal > main rom, and I could remove the REX and put something else in the optrom > socket. > > -- > bkw > >
