EPSON EHT-10 and EHT-11 These pretty unknown handled terminals are running under CP/M. Exist in two form: with a numerical keyboard (EHT-10), and with a a touchpad (EHT-11). You can see here some picture of my EHT-10 and EHT-11, and the EHT-10 LCD menu displayed at power on. If you have any information, manual, periphals, card, please, contact me: vernet DOT jerome AT wanadoo DOT orange Very little information can be found over Internet about it. here is what I found: Carateristics CPU Z80 System ROM 128k Max internal User ROM 128k Supplied RAM 64-256k Max internal RAM 256k Touch sensitive keyboard 5x14 keys Display LCD/supertwist (tm) Charachers x lines 12x14/25x10 Character matrix 7x11/6x8 Printer width 24 Serial Port RS-232C Barcode Port yes I/C smartcard 8/16k Size width (mm) 93 Size depth (mm) 213 Size height (mm) 38 Weight (kg) 0.6 Operating system CP/M 2.2 Languages ROM Basic Interpreter, any Z80 based higher level language (C, Pascal, ...) Pin Out Terminal pin# I/O Contents GND 1 - Ground RTX 2 O Serial data out RRX 3 I Serial data in RTS 4 O Request to send CTS 5 I Clear to send DSR 6 I Data set ready DTR 7 O Data transmit (? not terminal) ready CD 8 I Carrier detect CG E - Case ground (the metal-ring in the connector) Pin#: 8 7 6 5 4 3 2 1 Signal level: RS-232C (+-5 V) Receive level: Within +-15 V Es wird ein 6Volt Netzteil mit Innenkontakt minus benötigt. 1986 for the first time, the idea of directly entering orders during the ordering discussion became a reality when Epson presented the first touchscreen computer display, the Epson EHT-10. 64 KB memory, 192 KB RAM, 4 MHz speed and the now-obsolete operating system CP/M (the forerunner of MS-DOS) were the basic parameters for managing the orders of our first customer ESPRIT. The orders were printed out using the robust Diconix printer by Kodak. I found a 9-pages article using it: Title: Randomized controlled pilot trial of a hand-held patient- oriented, insulin regimen optimizer Author: R. R. Holman, A. D. Smale, E. Pemberton et al. Publication: Medical Informatics & The Internet In Medicine Publisher: Informa Healthcare Date: Jan 10, 1996 "Informatics for Health and Social Care", Volume 21, Issue 4 October 1996 , pages 317 - 326 Also, a Californian University has severals: http://projects.crustal.ucsb.edu/scec/pbic/equip/inventory.html So, there should be students knowing how to use them... Farther, on the same Web site, I found: http://projects.crustal.ucsb.edu/scec/pbic/equip/man/equip_man.html The user interface to the DAS is performed using an external terminal of some kind. The most popular currently is the HP 100LX palmtop computer. The PBIC also has several Zeos style palmtop computers. In the past the Epson EHT-10 was widely used. The palmtop computers used today with the FSC software can display more information at one time than the older, more cumbersome EHTs. --- It's said to have CPM in rom (that why I post here). But as for other such device -like Espon HX20, Tandy M100, etc-, CP/M is hiden. At boot, I can select a config menu, or a LOAD screen, where the device wait for something coming from RS232. I do not have access to the ROM Disk (I know it's here, because it's like other Epson systems, PX4 and PX8). There is a file system in it (in RAM, as A:), and ROM socket module was said to be accessible as drive B:. > Another question is: How do you type command lines? As there is no prompt, I can't. It may exist a trick to get the prompt, but cannot find it. --- It's running CP/M 2.2, Communication to/from it is with Epson's filink protocol, if you use the ROM-applications. (I have the program to comm. from a MS-DOS PC, if you want it I can e-mail it to you). The BIOS is extended with some functions to manage the display and the touch area. You can do some graphics on it ! You have the possibility to program a EPROM with up to 128 kbyte's, with some special EPSON-program, and access it as the B-drive on the EHT. The connector on the top is for a printer, in the side there is two comm- ports, one for a barcodereader and one for RS-232C (you can connect the external EPSON-floppy-drive which is also used for PX-8,PX-4 etc.) --- Experimentation has shown that you can feed text format basic files into the builtin basic interpreter using filink. Hint: in basic use the function V$ = KINPUT$(n) to get keyboard input. where n= 0=calculator 1=alphanumeric 2=symbols 3=normal ---