The Elektronika MK‑90 has always been a fascinating machine to me. I’ve long wanted to integrate it into PockEmul because of its unique characteristics that fully justify its place ( a powerful CPU, a large display, … ).
Getting familiar with this computer will be a real challenge for pocket computer enthusiasts, since it uses Russian messages rather than the English interface common to most pocket computers of that era.
The MK‑90 features two extension slots for RAM/ROM modules and a companion device—the MK‑92, a plotter combined with a cassette output (not emulated yet in PockEmul).
PockEmul was originally dedicated to pocket computers from the 1980s and 1990s, most of them programmable in BASIC. The absence of HP models (HP‑75 and HP‑71) was therefore a gap that absolutely needed to be filled.
I had long postponed this task because I was unfamiliar with these machines, and their complexity somewhat discouraged me. Eventually, I decided to take the plunge—and here is the HP‑71B in PockEmul.
It was an interesting challenge because I wanted to emulate this machine entirely using object-oriented programming, with each component represented as an object or a set of objects. That meant drawing inspiration from existing emulators—mostly developed in C with pointers to data structures—was never really an option.
This is the very first release, and inevitably some issues remain.
Dear PockEmul’s fans, we are pleased to announce the new PockEmul release. It will be available in the next few week. We are in the final testing phase looking for the most obvious bugs.
This new version brings several new models and some new features:
New HP-71b package.
New Elektronika MK-90 package.
New Sharp PC-1211 Simulator (only available for subscribers as a preview because it still have a lot of bugs).
IWS-video for the Sharp PC-1500.
New Sharp PC-1445 – included in the PC-14xx package.
Modules & Features for the HP-41CX package enhanced.
Sharp PC-1500 and Tandy PC-2 free models are limited to base memory configuration. CE-150 is not free anymore.
Only 64bit release. 32 bit release is not available anymore on Android.
I’m fully aware that it’s been quite a while since version 2.9 was released.
You might be wondering why I don’t publish smaller releases more frequently, each with fewer models, instead of waiting to deliver a larger release with several models at once. The truth is, I find it difficult to focus on a single model and bring it to completion from start to finish. Very often, the final imperfections prevent me from reaching the required level of quality, and solving them takes a lot of trial and error before the right solution emerges.
Working on multiple models in parallel helps me maintain both my curiosity and my motivation.
Rather than writing one long post detailing all the new features, I’ll spread the announcements across several posts leading up to the release date—and possibly even after.
Feel free to share your thoughts and feedback in the comments!
Perfect emulation is an infinite quest. Please report us any inaccurate behaviour at contact@pockemul.com
A message for our longstanding users and subscribers : PockEmul is a 25 years passion project and a labor of love. We invite you to share the passion and love for vintage computing. Help us make history like these computers have done in the not-so-distant past. Help us shape the future of PockEmul. Spread the word!
This is a compiler for Pocket Computer created around 1987~1988.
Compiler and Runtime Library are very compact and can coexist in memory.
You can edit, compile, and run source code in memory.
A lot of useful instructions for the game.
The generated code is small and fast because variables are stored in RAM.
I recently made PockEmul compatible with the LC-3 Compiler for the Sharp PC-1261/1262. It will be part of PockEmul 2.10.0
This required extensive groundwork, as the compiler relies heavily on undocumented features of the SC61860 processor, many of which had not yet been implemented in the emulator.
The compiler enables developers to write programs directly in BASIC, using special instructions, and then compile the code into LM format, all within the pocket computer itself.
It is particularly well-suited for creating fast-paced graphical games.
Originally developed in Japan, the compiler had no existing English documentation available until now.
