Posts: 109
Threads: 6
Joined: Jan 1970
There are certain pacs you don't need to use with certain calcs such as memory or quad memory modules with the CV or CX as they already have the max memory internal. Also, you don't use the extended functions module or the timer module with the CX as it already has the functions internal. There are certain modules that need to have other items to be of any use. The HPIL module is one of those. It is of very limited use without any IL accessories such as the 82162 thermal printer or the 82161 cassette drive. There are others as well that are of only limited use. There are also labeling conflicts within the pacs themselves where some pacs won't work right if you have other pacs or peripherals attached. For example, if you have the HPIL module attached and the print function is not defeated and you also have an 82143 thermal printer attached your calc will most likely lock up if you try to print. This is by no means an exhaustive list just some examples but I hope it helps. Randy
Posts: 59
Threads: 7
Joined: Jan 1970
ron; to answer your question, the ones by hp were intended to. now the addendums: there are weird bugs like one of the ones that Jedrzejowicz describes as the "fading crash" that "is due to the interaction of the printer with the time module and the extended functions." if you execute "FMT" without having the printer attached and enabled, the display fades out temporarily. both d'zign software and tds produced ROM's for surveying that needed a cx or at least an extended functions chip. i assume "ramss" has the same needs but i dont know. another thing you have to watch out for is rom numbers. if you have two that are the same, the second one (in the 41's order of access) won't be found. this happens when the tds rom and the optical wand are combined; in this case the wand dosn't function. so don't assume that a rom dosn't work with your calcer until you try it alone. there is a list of rom numbers somewhere but i dont remember where. about the list you were asking about; if you make one we will read it.