Mega Games Cartridge for the Electron MGC

reminisce about bbc micro & electron games like chuckie egg, repton, elite & exile

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martinw
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Re: Mega Games Cartridge for the Electron MGC

Postby martinw » Thu Aug 24, 2017 5:22 pm

That's my second MGC arrived =D>

IMG_5320.JPG

IMG_5323.JPG


Spot the difference :D

I'm not sure Snapper normally runs this fast :lol:

https://youtu.be/WRX6QIveI6c

Still excellent though, well done 8)

Martin

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davidb
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Re: Mega Games Cartridge for the Electron MGC

Postby davidb » Thu Aug 24, 2017 8:43 pm

Ah, I guess you have Turbo mode on there...

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Re: Mega Games Cartridge for the Electron MGC

Postby dixiestoat » Fri Aug 25, 2017 6:27 am

Snapper is hilarious in Turbo mode ! Also try Superior's Smash And Grab or Acornsoft's Monsters or Boxer..! So funny... :lol:
If in doubt, CTRL-BREAK thou should clout..

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martinw
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Re: Mega Games Cartridge for the Electron MGC

Postby martinw » Fri Aug 25, 2017 9:35 am

davidb wrote:Ah, I guess you have Turbo mode on there...


You've piqued my interest now, I presumed it was in normal mode because I couldn't get the cartridge to boot with the switch in the other position.

Does anybody know which toggle switch position is Turbo and how to tell if it is in Turbo, the switch is up at the moment from the pictures?

Cheers,

Martin

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martinw
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Re: Mega Games Cartridge for the Electron MGC

Postby martinw » Fri Aug 25, 2017 3:33 pm

My mistake, boots in both :D

Snapper is good fun at warp speed =D>

Martin

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Re: Mega Games Cartridge for the Electron MGC

Postby martinw » Fri Aug 25, 2017 3:34 pm

IMG_5334.JPG


Martin

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daveejhitchins
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Re: Mega Games Cartridge for the Electron MGC

Postby daveejhitchins » Sat Apr 21, 2018 9:23 pm

Well, it looks like there's still a demand for the MGC MK I - So, while I work on MK II I'll do another batch of the MK I.

I'll take the opportunity to rearrange the software in the Main, 1st, 16K block to be able the run DavidB's scrolling intro, just at power-up. I'll also work to remove (unplug) all fitted ROMs that aren't needed. I'd like to do this to to enable the MGC to run with an AP6 fitted that's full of ROMs, some of which could interfere with games - stopping them running or even loading (the answer here is to unplug them with a utility command). The hardware will remain the same, however.

Dave H :D
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

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davidb
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Re: Mega Games Cartridge for the Electron MGC

Postby davidb » Sun Apr 22, 2018 12:22 am

If you haven't updated the menu program recently then it should be fairly easy to do this, especially if you are supplying the EEPROM reading/writing tools in a separate ROM bank.

I'll update the GitHub repository to make it easier to see how to build a new menu ROM with my tooling. I'll also try to accommodate your tooling with the title screen code itself, so you can still build new menu and index ROMs without having to run my tools. :)

The tools branch of the GitHub repository contains a slightly different menu format since it accommodates games that require more than 2 ROMs.

Another feature that would be interesting to add at some point is saving snapshots to empty banks on the cartridge. This would mean including bits of MartinB's tools in various places to handle in-situ flashing of data, and it would also require doing something fancy with events to catch, for example, the key combination that would cause a snapshot to be taken. Anyway, that's something for another time. :)