Search found 10 matches

by zaxon
Sun Oct 08, 2017 2:02 pm
Forum: Hardware hacks and extensions
Topic: Cumulus incompability solved, i think.
Replies: 3
Views: 175

Re: Cumulus incompability solved, i think.

I build some cumulus few months ago too and i build next few soon . Yes, orginal busboard for Cumulus like this, is modded ;)
by zaxon
Sun Oct 08, 2017 1:46 pm
Forum: Hardware hacks and extensions
Topic: Cumulus incompability solved, i think.
Replies: 3
Views: 175

Cumulus incompability solved, i think.

Some Oric not working with Cumulus, here is small circut for mod Bus board what can help . This circut improve O2 signal from CPU to Cumulus. Desolder U1 pin 11 from bus board. Desoldered pin is connected to 74HCT123 pin 2 (O2IN signal ) From pin 1 74HCT123 connect ( signal O2OUT) to pad where was p...
by zaxon
Sat Jul 08, 2017 5:42 pm
Forum: Hardware hacks and extensions
Topic: Cumulus Firware Compilation
Replies: 136
Views: 35477

Re: Cumulus Firware Compilation

Ok, ready ;) Big thanks for support. https://images83.fotosik.pl/682/166f5d878d4a4f68gen.jpg Some demos downloaded, beer in fridge, so is time for saturday relax with Oric scene ;) And yes, i need swap colors in case, red bottom and black top . Heheheh I list also few interfaces on Sell My Retro page.
by zaxon
Sun Jul 02, 2017 12:10 pm
Forum: Hardware hacks and extensions
Topic: Cumulus Firware Compilation
Replies: 136
Views: 35477

Re: Cumulus Firware Compilation

Very good ;) When i finish i also share working files in one place. Ok, next day fight, i upload 2 diffrent JED files to XC95144 without success. Also ,somebody know why in Cumulus is Flash EEprom 256, not normal eprom like 27c64 ? Rom for microdisc is 8 KB. So what about rest? Write 4x8kb in to eep...
by zaxon
Sat Jul 01, 2017 9:50 pm
Forum: Hardware hacks and extensions
Topic: Cumulus Firware Compilation
Replies: 136
Views: 35477

Re: Cumulus Firware Compilation

ISS many thanks, now is much better ;) Time to talk with XC95144 :) . Also my orginal rom from orginal microdisk is dead. :evil: I try dump it but is empty...Not easy..

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by zaxon
Sat Jul 01, 2017 3:19 pm
Forum: Hardware hacks and extensions
Topic: Cumulus Firware Compilation
Replies: 136
Views: 35477

Re: Cumulus Firware Compilation

Yop, i use bootloader code from ISS from this topic http://forum.defence-force.org/viewtopic.php?f=9&t=658&start=120#p9409 . I compile it in mp lab using modded linker, maybe this is also problem :?: Echh I feel like a child in the fog... // File: 18f46k20_g.lkr // Generic linker script for the PIC1...
by zaxon
Sat Jul 01, 2017 2:57 pm
Forum: Hardware hacks and extensions
Topic: Cumulus Firware Compilation
Replies: 136
Views: 35477

Re: Cumulus Firware Compilation

No luck...
Farious formats and cards, also formatted by this formatter.Start and hanging.
Image
by zaxon
Sat Jul 01, 2017 1:09 pm
Forum: Hardware hacks and extensions
Topic: Cumulus Firware Compilation
Replies: 136
Views: 35477

Re: Cumulus Firware Compilation

Again, first i need compile working SD bootloader. I have brand new Cumulus with empty PIC. You talking about firmware. /* Cumulus 18F46K20 Firmware * SD Card Bootloader. * Copyright 2010 Retromaster. * * This file is part of Cumulus Firmware. * * Cumulus Firmware is free software: you can redistrib...
by zaxon
Sat Jul 01, 2017 11:54 am
Forum: Hardware hacks and extensions
Topic: Cumulus Firware Compilation
Replies: 136
Views: 35477

Re: Cumulus Firware Compilation

Hi thanks. But i need bootloader first ;)And here is my problem, bootloader what i have , cannot load BIN file from memory card. I try 8 diffrent cards. Also my Cumulus use PCF8833 display. I was read all topics here, http://forum.defence-force.org/viewtopic.php?f=9&t=658&start=120 , is similiar pro...
by zaxon
Sat Jul 01, 2017 11:10 am
Forum: Hardware hacks and extensions
Topic: Cumulus Firware Compilation
Replies: 136
Views: 35477

Re: Cumulus Firware Compilation

Hello all ,thanks for add and sorry about my poor english. I know, it is really old topic but i have problem with Cumulus and i hope somebody here can help me. I do few Cumulus boards for friends but i'm stuck on bootloader . With some issues i'm finally compile it and load to cumulus but when i try...