Search found 148 matches

by highwayman
Mon Jun 02, 2014 11:42 pm
Forum: Technical questions
Topic: need some help for restoratio.
Replies: 11
Views: 6104

Re: need some help for restoratio.

do you actually need PAL?

because a lot of people just use a pc monitor and one of these.
http://www.sintron-hk.com/GBS-8220-arca ... 99965.aspx
:D
by highwayman
Sun May 25, 2014 8:19 am
Forum: Technical questions
Topic: need some help for restoratio.
Replies: 11
Views: 6104

Re: need some help for restoratio.

prom dump
by highwayman
Fri May 02, 2014 11:05 pm
Forum: Technical questions
Topic: Oric-1/Atmos ROM Switch Information
Replies: 2
Views: 3142

Re: Oric-1/Atmos ROM Switch Information

it would be better to use a single 27c256 eprom and a pullup resistor (10k)
and a simpler spst switch.
by highwayman
Fri Apr 25, 2014 7:23 pm
Forum: Hardware hacks and extensions
Topic: Replic'Oric
Replies: 37
Views: 21364

Re: Replic'Oric

any chance you can share the schems & code for that keyboard interface?
:D
by highwayman
Wed Apr 23, 2014 1:33 pm
Forum: General Discussion
Topic: New Oric Phoenix or Pravetz 9D
Replies: 25
Views: 11568

Re: New Oric Phoenix or Pravetz 9D

how about using an emulator on a raspberrypi or beaglebone etc.

start with an oric, then add the extra ram etc using emulation - it's easier to debug.
by highwayman
Thu Apr 10, 2014 6:11 am
Forum: Hardware hacks and extensions
Topic: Oric ROMs
Replies: 6
Views: 4979

Re: Oric ROMs

like this one i dumped?
:D
by highwayman
Thu Aug 16, 2012 1:55 am
Forum: General Discussion
Topic: Oric hardware museum
Replies: 9
Views: 4623

Re: Oric hardware museum

well someone forward this post to:
Apple
Activision
Sharp
STERN

just for a start.
:mrgreen:
by highwayman
Thu Aug 16, 2012 1:52 am
Forum: General Discussion
Topic: Oric hardware museum
Replies: 9
Views: 4623

Re: Oric hardware museum

caffexpress, like shirtinator and a number of others,
act as manufacturers/printers & sales agents for others.

in this case, it looks like they are contracted by "old-computers.com"

and here it is - looks like they'v been busy!!!!
http://www.old-computers.com/store/goodies/default.asp
:evil:
by highwayman
Sat Aug 11, 2012 4:44 am
Forum: Hardware hacks and extensions
Topic: Simplest MMC Interface hardware
Replies: 60
Views: 28589

Re: Simplest MMC Interface hardware

just thought i'd give an update, i'm generating the mcu-side schematic. just working out the best way to link 5v & 3.3v stuff at the moment. that, and trying not to design it with anything that will be hard to source. it may be a problem using fram, i think ramtron may be discontinuing 5v parts! :( ...
by highwayman
Tue Aug 07, 2012 10:39 pm
Forum: Hardware hacks and extensions
Topic: Simplest MMC Interface hardware
Replies: 60
Views: 28589

Re: Simplest MMC Interface hardware

32k of ram - you mean as 2 banks for o.s.? i keep getting confused about why anybody wants a ram chip. and the mcu cant write an o.s. image without sitting on the whole address & data busses - that's gonna eat up all my i/o i'd rather have the expansion rom just written from the oric side. the sd2ie...
by highwayman
Tue Aug 07, 2012 6:46 pm
Forum: Hardware hacks and extensions
Topic: Simplest MMC Interface hardware
Replies: 60
Views: 28589

Re: Simplest MMC Interface hardware

well i'm not so sure, anyway - address decoding can be done later. on the mcu stuff, i looked into some detail. we can/will have ethernet, SD-card(micro-sd) and ps2-mouse. probably joystick - but not sure how. i may need to add a multiplexer because i/o is getting tight. any rom will be seperate fro...
by highwayman
Sun Aug 05, 2012 11:00 pm
Forum: Hardware hacks and extensions
Topic: Simplest MMC Interface hardware
Replies: 60
Views: 28589

Re: Simplest MMC Interface hardware

consecutive bytes. probably no more than 2 or 4. i want zero page because if you load a file, your gonna run a loop reading from the buffer byte and writing to consecutive destination bytes. just like loading from tape. and obviously reading from page zero uses less cycles so runs faster. also, i wa...
by highwayman
Sun Aug 05, 2012 9:22 pm
Forum: Hardware hacks and extensions
Topic: Simplest MMC Interface hardware
Replies: 60
Views: 28589

Re: Simplest MMC Interface hardware

o.k. well asuming using hardware address-decoding and an atmel AVR, the sd-card is there, if the atmel has a hardware spi port not used then ethernet is pretty much a given - just add software. if it has a hardware serial port then maybe rs232 or ps/2 serial mouse - again by adding software later. u...
by highwayman
Sat Aug 04, 2012 10:16 pm
Forum: Hardware hacks and extensions
Topic: Simplest MMC Interface hardware
Replies: 60
Views: 28589

Re: Simplest MMC Interface hardware

HANG ON!
why do you want a mouse :?: :?: :?: :?: :?:
:D
by highwayman
Sat Aug 04, 2012 10:07 pm
Forum: Hardware hacks and extensions
Topic: Simplest MMC Interface hardware
Replies: 60
Views: 28589

Re: Simplest MMC Interface hardware

that's doable, but if you can show me the software for the ethernet-stack, the usb driver and so on, that still leaves room for an aplication program i'd be pretty surprised. the usb already exists on a number of atmel's, the ethernet is done via a serial port on the same mcu. see this for an exampl...