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FOR SALE / WANTED / Re: M5 Multi II - New version of Sord M5 multicart
« Last post by cdoty on December 18, 2019, 11:58:12 PM »
I have the start of a TMS-9918 based game, that runs on 11 systems, and I've tested on 8 of the 9 actual systems I have.
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FOR SALE / WANTED / Re: M5 Multi II - New version of Sord M5 multicart
« Last post by sirmorris on December 14, 2019, 09:23:38 AM »
Yeah that'll work too  8)

What are you working on?
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FOR SALE / WANTED / Re: M5 Multi II - New version of Sord M5 multicart
« Last post by cdoty on December 13, 2019, 10:55:49 PM »
It turns out the easiest way was to encode the data into a CAS file.

It took me about 4 hours to figure out the cassette format and 30 minutes to write a utility to do it.
The manual documents the tape format pretty well, a few things were lost in translation.

MaxDuino recognized the CAS format, or at least thought it did. But, it would not load on the Sord M5.
I suspect it's a volume issue, as the phone has to be cranked up to max volume to work.

MAME castool was able to convert the CAS file to WAVE and it played fine through a phone.
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FOR SALE / WANTED / Re: M5 Multi II - New version of Sord M5 multicart
« Last post by sirmorris on December 12, 2019, 07:42:22 PM »
The RAM on the cart is mapped to the upper 32k and is always present. It is contiguous with the built-in 4k, which appears at 0x7000-0x7fff.

The M5 has a printer port but it's output only. Probably the best way to get code into the machine would be to rig something up to one or both of the joystick ports. They're easy to read and if you were clever you could read multiple bits at once to increase the speed. Arduino or similar on one side, some nifty machine code on the other. In fact you could read a byte at a time, with 4 bits on UDL & R on both ports and a clock on one of the fire buttons...

All you'd need is a 6 pin mini-din lead and an arduino, some basic soldering chops.
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FOR SALE / WANTED / Re: M5 Multi II - New version of Sord M5 multicart
« Last post by cdoty on December 12, 2019, 06:59:58 PM »
I just picked up one of these and I'm now looking for a way to use it to test software.

Obviously, the ROM image can be patched with another ROM, but I would suspect that the ROM socket has a limited number of insertion and removals before it would give out.

The next obvious choice would be to take advantage of the 32k to somehow load a program into memory. My coding is being done in assembly and not basic.
If I understand correctly the Sord M5 can load either basic or binaries from the cassette on power up. If so, can this take advantage of the extra RAM. And, are there any documents available on how to do this?

The final choice would be a ROM that allows files to be transferred through a serial style link to a PC. This is done on the Tatung Einstein computers, but it has plenty of extra memory and an actual serial connection.
Is the 32k enabled at all times? And, is there a connection that could work for serial communications?
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NEW MEMBERS - SIGN IN HERE PLEASE / Helllo from a long time retro system hobby developer
« Last post by cdoty on December 12, 2019, 06:31:36 PM »
I've been involved in console/retro computer development since the SNES, Genesis, Gameboy, and Amiga.

I've previously released:
Sporting Clays game, for the PSX, N64, and Saturn.
Frog Feast for several systems.
Various tools and source code for the Neo Geo, Saturn, and various arcade systems.
The encryption toolkit for the 3DO.

My current project is a game for TMS-9918/28/29 based systems. I currently have it running on 10 of the 11 systems listed on Wikipedia, and the Hanimex Pencil II, under emulation. I've also tested on real hardware for eight of the systems, with one more to be tested shortly. The rest of the systems are either  difficult or expensive to obtain.
The eight tested systems are: ColecoVision, MSX, SG-1000/SC-3000, Spectravideo, Tatung Einstein, Texas Instruments TI-99/4a, Tomy Tutor, and Sord M5.
The system to be tested is: CreatiVision.

I have also started a port of the "Battle Vader" Cassette Vision game to the Super Cassette Vision.
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RCM ANNOUNCEMENTS / Seasonal Event
« Last post by AndyRCM on November 26, 2019, 11:16:30 AM »
on the 30th November 2019 we are holding one of our ‘Seasonal Gatherings’
featuring Retro Games, Friends, Good Food, Hot and Cold Beverages, Live Music and lots more!

Entrance to this event is as usual - Minimum of £10 donation per person via our ‘Virgin Giving Page’ - details are already on the home page!

Doors open: 10.00am and close around 8.00pm

Food served all day - Bar open at 1.00pm
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FOR SALE / WANTED / Dot Matrix Printers - Free for collection
« Last post by g4ugm on November 18, 2019, 12:57:02 PM »
Panasonic wide carriage quiet printer
Amstrad DMP200

https://1drv.ms/u/s!Ag4BJfE5B3onlfEF5kutlWAvQx2GkQ?e=DfzBuk

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GAMING EVENTS - OPEN DAYS 2019 / Re: Seasonal Event - 30th November
« Last post by Modeler on November 10, 2019, 01:59:27 PM »
Payment sent, looking forward to it!  :D
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GAMING EVENTS - OPEN DAYS 2019 / Re: Seasonal Event - 30th November
« Last post by Scarlettkitten on November 08, 2019, 12:11:39 PM »
Donation sent, see ya there peeps :) x
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