Search found 114 matches

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Tue Nov 26, 2013 10:48 am
Forum: Hardware hacks and extensions
Topic: Microdisc replacement project
Replies: 183
Views: 139054

Re: Microdisc replacement project

What to see me soldering Cumulus nr.5 in 8 minutes :D
http://www.youtube.com/watch?v=uxs6xyfdgUw
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Mon Nov 25, 2013 10:16 pm
Forum: Hardware hacks and extensions
Topic: Microdisc replacement project
Replies: 183
Views: 139054

Re: Microdisc replacement project

The Oric expansion bus has 34 pins, and you use a standard IDE flat cable that 40 pins: Would have it not been possible to pass the power through the unused lines of the IDE cable instead of the separate 4 pin power cable? as jorodr already said. I don't think there are enought pins free on the IDE...
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Mon Nov 25, 2013 3:50 pm
Forum: Hardware hacks and extensions
Topic: Microdisc replacement project
Replies: 183
Views: 139054

Re: Microdisc replacement project

Here is a little "how-to" connect the Cumulus to the Oric. The blue side of the IDE-Cable goes to the Cumulus and the black one to the CumulusBus-Controller. The cable will only fit in one direction because of a missing pin in the IDE-Cable. Also the 4-Pin Power/Resetcable fits only in one direction...
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Mon Nov 25, 2013 3:41 pm
Forum: Hardware hacks and extensions
Topic: The Last Microdisc
Replies: 2
Views: 7065

Re: The Last Microdisc

Looks good :)
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Mon Nov 25, 2013 3:32 pm
Forum: Hardware hacks and extensions
Topic: Microdisc replacement project
Replies: 183
Views: 139054

Re: Microdisc replacement project

Hi Symoon,

the PIC is a microcontroller from Microchip. So it is like a CPU+RAM+ROM. This chip on the Cumulus and controlls the LCD and the SD-Card.
A EEPROM is only a ROM (Read Only Memory).
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Thu Nov 21, 2013 11:28 am
Forum: Hardware hacks and extensions
Topic: Microdisc replacement project
Replies: 183
Views: 139054

Re: Microdisc replacement project

Hi! i ordered more stuff for the Boards. So that we can start with the production very soon. I also send two boards to ibisum. I hope we can figure out why the bootloader is not working correct. Meanwhile i work on the hardware and solder more boards. Btw: I'm at the northcon lanparty in north germa...
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Sun Nov 10, 2013 1:18 pm
Forum: Hardware hacks and extensions
Topic: Microdisc replacement project
Replies: 183
Views: 139054

Re: Microdisc replacement project

Hi! I've build a few new Cumulusboards and i like to give it to someone who could help me with the bootloader. Maybe someone here have a PIC-burner hat a little experience with PIC-chips and the C18 Compiler. First things first... the Cumulus works fine. But... only without the bootloader. So my boa...
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Fri Nov 08, 2013 11:59 am
Forum: Hardware hacks and extensions
Topic: Microdisc replacement project
Replies: 183
Views: 139054

Re: Microdisc replacement project

Hi! I've ordered today more EEPROMS from China. It is the cheapest way. But they need about 2-3 weeks to find there way to germany. I only order about 15 pieces at once so i don't get any problem with the german customs. I also ordered more LCDs direct from a german reseller... so no problems with t...
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Thu Nov 07, 2013 12:09 pm
Forum: Hardware hacks and extensions
Topic: Microdisc replacement project
Replies: 183
Views: 139054

Re: Microdisc replacement project

Hi everybody! I'm Boris and i'm the owner of the Blog boriskaminski.de. So... yes i have 3 working Cumulus-Boards and they are all working on my Oric-1 and Oric Atmos. In the past i've had a few problems with the roms but now it's seems to be fine. Maybe some expert in burning EEPROMS can help me to...