Surprising contrast: HP’s 70s–80s internal docs are public and shared by former engineers, but not so for Sharp or Casio. Why wasn’t this knowledge preserved? A real loss for computing history.

731

PockEmul

PockEmul @PockEmul

13 Dec 2025

The Elektronika MK-90 pockemul.com/index.php/2025/…

PockEmul

PockEmul @PockEmul

12 Nov 2025

Did you know the Sharp PC-1251 has a serial port on the 11 pins connector ? The ROM instruction is able to load a BASIC program with a simple serial protocol on pins D_IN, D_OUT, ACK and BUSY.

1,296

PockEmul

PockEmul @PockEmul

27 Dec 2024

first output on the MK-92 after a lot of reverse engineering of its ROM. So happy.

1,224

PockEmul

PockEmul @PockEmul

7 Sep 2025

Unfortunately, it seems that part of the MK-92 ROM is missing. The section responsible for sending commands to the step motors is absent. I won’t be able to include the MK-92 in the next release, at least until the full ROM is available or the missing part can be simulated.

130

PockEmul

PockEmul @PockEmul

2 Aug 2025

I'm looking for the CPU ROM of the Sharp PC-1445 (sc61860A37), and all others I don't have.

186

PockEmul

PockEmul @PockEmul

27 Jul 2025

I add a fully configurable virtual Joypad to PockEmul. So easier to play games.

365

PockEmul

PockEmul @PockEmul

26 Jul 2025

Thanks to @HeyBirt , who dumped the ROM, the IWS Video Interface will be included of next PockEmul release.

169

PockEmul

PockEmul @PockEmul

25 Jul 2025

So happy. LC-3 is now working on PockEmul.

1,856

PockEmul

PockEmul @PockEmul

6 Jun 2025

I'm working on making the LC-3 compiler functional in Pockemul for the Sharp PC-1261/62. The CPU emulation seems to be working fine. I suspect that LC-3 is specific to the Japanese ROM. Can anyone confirm? And if so, could you tell me where I can find this ROM?

482

PockEmul

PockEmul @PockEmul

22 Feb 2025

I am making progress on the emulation of the HP-71b with its HP-IL peripherals. It's starting to come together with the printer, video output, and mass storage.

748