I have installed a few of these, even in one of the models that has the BIOS chip in the middle of the board. If your EX has the BIOS chip in the PLUS expansion bay area then you won't even need to pull your EX apart to install it (other than removing any PLUS cards you may installed). It's even easier to install than the HX Smartwatch+. However, if you have an EX with the BIOS chip in the middle of the motherboard the entire computer will need to be torn down. There are a few modifications that need to made to get the Smartwatch+ module to fit properly. I have uploaded complete instructions of what I had to do as well as pictures to Cybernetic Systems so they will be able to inform you on the mods required. Nothing major and no special tools needed.
To find out which model of EX you have simply pull your PLUS expansion cards and look under the cardboard foil. If you see your BIOS chip there then you will not need to tear down your system. If all you see there are a few 14 pin RAM chips then you have the BIOS chip in the middle.
As with all the other Cybernetic Systems products I have purchased to date the quality of this Smartwatch+ module is excellent. I highly recommend this module for your EX if you would like to have the benefit of an RTC installed.
Edit: I just read the other review left in February. I had to install a second socket to act as a riser as well. Cybernetic Systems may be able to supply you with pins to raise the board slightly instead of having to source a socket to install.
Installs easy and allowed me to connect a backpack external 1.44mb floppy drive which worked perfectly so all signals are correctly routed. And again Tindie wants 100 characters when one quarter of that is sufficient.
It does exactly what it is supposed to do. Tindie wants 100 characters minimum to describe that it works, which is silly because "it does exactly what it is supposed to do" is accurate so I am just filling space.
This worked great in my Tandy 1000 hx. I did not need to cut the shielding as prescribed, because I had an extra IC socket I could layer it over to rise above the shielding. I placed some insulating electrical tape over the shielding, below this adapter, just in case.
I'm running DOS 5, which supported setting the date with a 4 digit year, even though the prompts do not reflect that.
I just finished installing the SmartWatch+ into my Tandy 1000 HX and it works beautifully. My HX had a real-time clock installed years ago but the batteries ran out and they weren't replaceable. The SmartWatch+ uses a standard coin battery for easy replacement ... nice touch! Installing the SmartWatch+ into a Tandy 1000 HX will require you to completely tear down the computer and remove the metal shield covering the motherboard. The hole exposing the BIOS chip will need to be enlarged to accommodate the larger size of the SmartWatch+. The documentation suggests using tin snips but I used a metal nibbler and had the hole enlarged in less than 10 minutes. Here's a tip: Install the SmartWatch+ module into the motherboard first, then install the BIOS chip into the SmartWatch+ BIOS socket. It will take a bit of down-force to get the BIOS chip to seat firmly into the SmartWatch+'s BIOS socket. Here's another tip: When putting your HX back together, test the keyboard BEFORE you put the case cover back on. One of the keyboard ribbon cables wasn't seated properly and I had to tear the HX apart for a second time. It only took me an hour to complete the SmartWatch+ upgrade to my system and that included having to tear down the system a second time for the keyboard SNAFU. Setting the clock for the first time is easy: Issue the DATE and TIME DOS commands and enter the current date/time. Next, type SMWCLOCK C to set the SmartWatch+'s date and time. Then, simply add the command SMWCLOCK S to your AUTOEXEC.BAT startup file to have the date and time set automagically every time you turn your Tandy on. Brilliant!
I purchased this adapter for my Tandy 1000 HX computer. My original thought was to connect a Xircom PE3-10BT parallel port Ethernet adapter to it. To my surprise the Tandy 1000 HX printer port will not support this (no fault of this adapter). It is nice however to use a standard Centronics parallel cable to connect my printer instead of using the original Tandy card edge cable which is very bulky and non-flexible. With this adapter I'll also have the ability to connect a parallel port sound card in the future if I wish.
I had been wanting to install an XT-IDE into my Tandy 1000 HX for a while now and the only feasible way is with this adapter. I now have an HX system with a 128MB CF hard drive installed thanks to this little adapter. I highly recommend this adapter if you have a Tandy 1000 EX or HX system just begging for an XT-IDE upgrade. Communication with the company has been awesome as well. Whenever I have had a question or concern the owner has been right there to help. Because of this I purchased the Tandy 1000 EX/HX printer port adapter and Tandy 1000 SX/HX real time clock as well.
This is a neat little device that adds a battery backed RTC to your Tandy 1000 EX - the device is well made and easy to install as per the comprehensive instructions. I have a UK Tandy 1000 EX which it turns out has a somewhat different PCB layout than the US version, with the ROM chip being located more centrally in the PCB, rather than in the location under the expansion bay shown in the instructions. By fitting a DIL socket to act as a riser between the ROM socket on the PCB and the board, this RTC board will comfortably fit inside a UK Tandy 1000 EX - fantastic!
Really neat adapter board for Gotek usb floppy drive emulators - allows easy connection of a Gotek to a Tandy 1000 EX or HX using the external floppy drive port and cable (supplies both data and power connections).