This page is dedicated to HrastProgrammer's SATURN BASIC and the
Emulators of HP/TI Calculators for HP Calculators ...

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*** Updated March 16, 2023 *** SATURN BASIC for HP-48G/G+/GX, HP-49G and HP-49G+/50G *** Updated March 16, 2023 ***

32K version: https://www.hrastprogrammer.com/hrastbas/hrast32k.zip

48K version: https://www.hrastprogrammer.com/hrastbas/hrast48k.zip

Manual: https://www.hrastprogrammer.com/hrastbas/HRAST-BASIC.pdf

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Just a few words from a long-term HP-41X user:

"And again I am extremely impressed by the supreme quality of all your software.
I never noticed that there might be some bugs in the HP-41X/Y/Z1/2 version I am using today.
If you remember well, when something works with me, be it ground-borne, sea-borne or airborne,
it means that it will work with anybody, or in other words, it means that it is fully debugged :-)"

Antoine M. Couëtte
(retired military / active airline pilot, former cosmonaut candidate,
author of 64K ASTRONAV software and, last but not least, a good friend of mine)

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HP-41C Emulator for HP-48GX/49G (Retired) HP-42S Emulator for HP-48GX/49G (Retired)


HP-71B Emulator for HP-48GX/49G (Retired)

(!) HP-41X, HP-42X and HP-71X emulators for the new HP-49G+/50G calculators.
(!) HP-82143A Helios Thermal Printer Emulator (Retired) (Windows version, for HP-41X).
(!) HP-82240A/B InfraRed Thermal Printer Emulator (Retired) (Windows version, for HP-41X/42X/71X).


HP-IL Emulation for HP-41X (Retired) ........... HP-IL Emulation for HP-71X (Retired)

(!) Short article about HP-IL + HP-41X applications.


HP-11C Emulator for HP-48/49 (Retired) .. HP-12C Emulator for HP-48/49 (Retired)


HP-15C Emulator for HP-48/49 (Retired) .. HP-16C Emulator for HP-48/49 (Retired)

(!) HP-11E, HP-12E, HP-15E/X and HP-16E emulators for the new HP-49G+/50G calculators.

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Free HP-41C Emulator for HP-48/49


Free TI-57 Emulator for HP-48/49 Free TI-59 Emulator for HP-48/49

(!) HP-41E and TI-57E/59E emulators for the new HP-49G+/50G calculators.

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(!) The list of keyboard layouts for all my emulators.
(!) Links to other sites regarding calculators and emulators.
(!) A short list of frequently asked questions ...

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If you have a question just send me a mail to:


(you have to retype this into your e-mail client)

Note: There have been a few reports that my messages from the above
e-mail address are marked as SPAM, stored to BULK folders, etc.
I can assure you that I don't send any spam around so this is a problem
with the antispam software on your side.
Please, re-check your antispam settings before contacting me. Thanks.

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My other free and unsupported work, available for download from this site:

TI-95 Emulator for Windows: TI95E.ZIP

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Copyright © 1984-2023 by HrastProgrammer.
(Calculator Programmer and Archeologist)
All rights reserved.

Last update: March 16, 2023