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Lars The 18Th

@larsthe18th.bsky.social

#MSX enthusiast for over 35 years Homepage: https://cinicsystems.github.io GitHub: https://github.com/LarsThe18Th

14 Followers  |  5 Following  |  12 Posts  |  Joined: 21.02.2025  |  1.7043

Latest posts by larsthe18th.bsky.social on Bluesky

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Small-Projects/PC/Windows/Maze_of_Galious_PassGen at master Β· LarsThe18Th/Small-Projects Small Assembly projects for MSX and PC. Contribute to LarsThe18Th/Small-Projects development by creating an account on GitHub.

I discovered an annoying bug in my Maze of Galious Password Generator, so here is a new Version (0.26) #MSX
github.com/LarsThe18Th/...

22.07.2025 11:14 β€” πŸ‘ 6    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

Recreation of Knightmare (MSX, 1986) title screen logo, from the 1986-5 issue of LOGiN magazine. #MSX

Big thanks to: MP83
bsky.app/profile/mp83...

youtu.be/fN9FT3Lt1Z4

04.05.2025 16:09 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image 26.02.2025 00:55 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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I almost found all cartrige combinations for #MSX game Pampas & Selene except one.

The Unknown ROM is not in my or TFH's collection,
it contains the following Hex values.
'1E E0 19 E5'

You can use this Python script to search through files.
github.com/Sepero/Searc...

Who can identify the ROM.

22.02.2025 21:58 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Tetris 2 dongel made out of a 9 pin joystick connector with a resistor on 4 and Pin 7.

Tetris 2 dongel made out of a 9 pin joystick connector with a resistor on 4 and Pin 7.

Image of a Tetris 2 dongel, a small circuit board with a (74HC02N) SMD chip soldered on it.

Image of a Tetris 2 dongel, a small circuit board with a (74HC02N) SMD chip soldered on it.

The first release of the #MSX game Tetris II (SE) also uses a dongle as copy protection.
I also reverse engineered this dongle.

Not really a secret, but it turns out that this dongle is easy to recreate with only a connector and a resistor.

More information on my github
github.com/LarsThe18Th/...

22.02.2025 17:24 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
A circuit design of the dongle with resistors and transistors to make a NOT and an AND gate.

A circuit design of the dongle with resistors and transistors to make a NOT and an AND gate.

Dongles are also used as copy protection on an MSX.
For example, Circuit-Designer uses a dongle on the joystick port.
I also reverse engineered this and was able to recreate the dongle using resistors and transistors to make the logic gates.

More information on my github
github.com/LarsThe18Th/...

22.02.2025 12:48 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Do you also have a switch installed to swap A and B drive ?

21.02.2025 20:11 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

As far as I can remember FM only.

21.02.2025 12:54 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Speaking of copy protections on the #MSX, I reverse engineered a number of different copy protections to find out how they work and how to disable them.
(Mostly for preservation purposes)

Some of them are explained in detail on my github:
github.com/LarsThe18Th/...

21.02.2025 12:50 β€” πŸ‘ 12    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0

I think the intro track of 'Greatest Driver' would also be a nice example to hear on the SixPAC. 😘

21.02.2025 11:44 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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If you want to run a copy protected diskimage (DMK) on your MSX with a Gotek drive. (With FlashFloppy firmware)

The best way to do this is to convert the .DMK image to .HFE (v3) format with the HxCFloppyEmulator_Software Export function.
Works like a charm.

#MSX

hxc2001.com/download/flo...

21.02.2025 03:27 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
A Philips NMS 8250 MSX Computer with the top cover removed.
You see the MSX from the front, with a Gotek and a floppy drive installed.

A Philips NMS 8250 MSX Computer with the top cover removed. You see the MSX from the front, with a Gotek and a floppy drive installed.

A Philips NMS 8250 MSX Computer with the top cover removed.
You see the MSX from the back where a switch is installed to be able to boot from the Gotek or the Floppy Drive.

A Philips NMS 8250 MSX Computer with the top cover removed. You see the MSX from the back where a switch is installed to be able to boot from the Gotek or the Floppy Drive.

A Philips NMS 8250 MSX Computer with the top cover removed.
Inside you  see a power cable and a flat cable connected to both the Gotek and the Floppy Drive.

A Philips NMS 8250 MSX Computer with the top cover removed. Inside you see a power cable and a flat cable connected to both the Gotek and the Floppy Drive.

Equipped my Philips 8250 MSX with a Gotek drive including a switch on the back to swap between drive A and B, so I can boot from both drives.

21.02.2025 03:12 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

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