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by poglad
Wed Nov 14, 2012 12:31 pm
Forum: Other projects
Topic: I've found a plastic case designed around a 2x16 LCD panel..
Replies: 7
Views: 3919

Re: I've found a plastic case designed around a 2x16 LCD pan

RaTTuS wrote:the display is not yet being worked on - next year sometime ....
Oh right - when did this change? They definitely said it would be later in 2012.
by poglad
Wed Nov 14, 2012 12:26 pm
Forum: Bare metal, Assembly language
Topic: Bare Metal ZX81 emulator
Replies: 30
Views: 9392

Re: Bare Metal ZX81 emulator

Sounds like good progress, keep us informed! :)
by poglad
Tue Nov 13, 2012 5:24 pm
Forum: General discussion
Topic: Raspberry Pi Research
Replies: 6
Views: 1362

Re: Raspberry Pi Research

bas90 wrote:I can only do research by going through information on internet, but can't find anything on file systems...
You can't have looked very far then...! :o
by poglad
Tue Nov 13, 2012 4:07 pm
Forum: RISCOS
Topic: gcc and RISC OS
Replies: 95
Views: 19812

Re: gcc and RISC OS

I'm sure you shouldn't have to place your source code in a directory named 'c'. Instead of compiling hello.c, I think you compile hello/c instead? You just swap / and . as they are used for equal and opposite functions in RISCOS compared with Linux. [Says me as a total newbie, but the . for director...
by poglad
Tue Nov 13, 2012 1:41 pm
Forum: HATs and other add-ons
Topic: Gertboard Testing
Replies: 11
Views: 2101

Re: Gertboard Testing

Thanks Gert - I did actually take a glance at the datasheet, but couldn't make head nor tail of it in the time available - my own shortcoming. 8-)
by poglad
Tue Nov 13, 2012 10:09 am
Forum: HATs and other add-ons
Topic: PiFace and Gertboard
Replies: 4
Views: 2444

Re: PiFace and Gertboard

Or, next solder in a socket. If you've blown one chip you might blow another!
by poglad
Tue Nov 13, 2012 10:07 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Wiring RGB LED's
Replies: 7
Views: 2627

Re: Wiring RGB LED's

...or ditch Linux. The RiscOS section now has a thread on GPIO. Depends how heavily invested you are in what you've done so far! 8-)
by poglad
Tue Nov 13, 2012 9:55 am
Forum: Other projects
Topic: I've found a plastic case designed around a 2x16 LCD panel..
Replies: 7
Views: 3919

Re: I've found a plastic case designed around a 2x16 LCD pan

That's interesting - some people output the IP address of the Pi to an LCD, so converting a case like this would be very neat. Once the official display becomes available - before Christmas, supposedly - can't remember if they said which year though :lol: - there'll be a whole new breed of enclosure...
by poglad
Mon Nov 12, 2012 9:38 pm
Forum: HATs and other add-ons
Topic: Gertboard Testing
Replies: 11
Views: 2101

Re: Gertboard Testing

Now that's very interesting, because that's exactly what I'm doing. Okay, I'll give it a try with 9V. Thanks for the tip!
by poglad
Mon Nov 12, 2012 9:35 pm
Forum: Bare metal, Assembly language
Topic: Bare Metal ZX81 emulator
Replies: 30
Views: 9392

Re: Bare Metal ZX81 emulator

That's true, although traditionally it was never done that way... I seem to recall always having to write little machine code things in a REM statement to do the OUT instruction! :lol: Whichever memory locations you choose, they won't be available for RAM any more (obviously). If you were cunning, y...
by poglad
Mon Nov 12, 2012 7:52 pm
Forum: For sale
Topic: Wow! First production enclosure just arrived
Replies: 35
Views: 10996

Re: Wow! First production enclosure just arrived

I've done a mini-review in the Cases section... http://www.raspberrypi.org/phpBB3/viewt ... 40&t=22707
by poglad
Mon Nov 12, 2012 7:49 pm
Forum: HATs and other add-ons
Topic: Gertboard Testing
Replies: 11
Views: 2101

Re: Gertboard Testing

The LED examples work fine for me - the only other part I've tested so far is the motor. Unfortunately this isn't working. The signals from the Pi arrive at the input pins of the motor controller, but the MOTA and MOTB outputs remain stubbornly dead. I've checked that the MOT+ pin is connected throu...
by poglad
Mon Nov 12, 2012 3:49 pm
Forum: RISCOS
Topic: HID for wireless KB/Mouse?
Replies: 23
Views: 8364

Re: HID for wireless KB/Mouse?

I take back my moan... I just pulled the bluetooth USB dongle out of my work PC and put it into the Pi, and booted up RiscOS... it immediately detected the wireless keyboard and mouse. In this case, a Logitech K520. Clicking the scroll wheel worked fine as the middle button. Bravo!!!
by poglad
Mon Nov 12, 2012 3:31 pm
Forum: Other projects
Topic: Pi88
Replies: 1
Views: 505

Pi88

Z88 emulator + LCD display board + USB keyboard = Z88 reborn!

https://cambridgez88.jira.com/wiki/disp ... bridge+Z88

Yes okay, this is a project idea, not something I've actually made... yet. :lol:
by poglad
Mon Nov 12, 2012 2:04 pm
Forum: RISCOS
Topic: HID for wireless KB/Mouse?
Replies: 23
Views: 8364

Re: HID for wireless KB/Mouse?

Ah, thanks for sharing! :D
by poglad
Mon Nov 12, 2012 2:02 pm
Forum: Bare metal, Assembly language
Topic: FreeRTOS Sucessfully Ported
Replies: 47
Views: 60390

Re: FreeRTOS Sucessfully Ported

Superb! Thank you.
by poglad
Mon Nov 12, 2012 1:57 pm
Forum: Bare metal, Assembly language
Topic: Bare Metal ZX81 emulator
Replies: 30
Views: 9392

Re: Bare Metal ZX81 emulator

Goody!!! This is great stuff. Concerning the shortage of GPIO pins for use with a membrane keyboard, I wouldn't worry much about that. As long as the keyboard is put through something like a MCP23017 chip, which is just a wiring job really, it will magically transform into an i2c device that require...
by poglad
Mon Nov 12, 2012 1:50 pm
Forum: C/C++
Topic: C vs Python for GPIO
Replies: 27
Views: 21591

Re: C vs Python for GPIO

I haven't used C++ since the 90s, and really got annoyed with header files etc. Anyways - the point is that C is great for lower-level stuff like speedy access to GPIO. Doing a foreach, or treating an array as an object with properties like Length is really higher level than C is aimed at. Have you ...
by poglad
Mon Nov 12, 2012 1:37 pm
Forum: RISCOS
Topic: HID for wireless KB/Mouse?
Replies: 23
Views: 8364

Re: HID for wireless KB/Mouse?

Nightmare... after the hassle of having to break out an old monitor, keyboard and mouse so that I could have a play with RiscOS, I thought I'd get one of those small wireless keyboards with a built-in mouse pad so that at least that side of things would be neat and tidy. I'm glad I didn't buy it yet...
by poglad
Mon Nov 12, 2012 9:39 am
Forum: Other projects
Topic: Cyntech case - quick review
Replies: 10
Views: 8413

Cyntech case - quick review

Okay, my "Blueberry" case from Cyntech arrived this morning so here are some pictures and a quick rundown of my first impressions. http://instagram.com/p/R7CqRTNNBL/ This is the case as it arrived - it didn't come in a box of its own, just cocooned in bubble-wrap. http://instagram.com/p/R7G-I2NNC4/ ...
by poglad
Wed Nov 07, 2012 9:31 am
Forum: Bare metal, Assembly language
Topic: Bare metal framebuffer in C
Replies: 43
Views: 17823

Re: Bare metal framebuffer in C

Thanks for all this, have bookmarked this thread! Yes... one of the reasons I'd like to have a play with bare metal is because I used to have fun programming the Game Boy Color - specifically because there was no operating system! :D
by poglad
Wed Nov 07, 2012 2:48 am
Forum: Bare metal, Assembly language
Topic: Starting bare metal...
Replies: 3
Views: 1973

Re: Starting bare metal...

Thanks! :-)
by poglad
Tue Nov 06, 2012 9:33 pm
Forum: Bare metal, Assembly language
Topic: Starting bare metal...
Replies: 3
Views: 1973

Starting bare metal...

I know there is a website mentioned elsewhere with a course on bare metal programming on the Pi... I've also just been looking at the DexOS website. If I go down the DexOS route (for now), will I be at any disadvantage in terms of a performance hit etc? Is it harder to address the hardware or call G...
by poglad
Tue Nov 06, 2012 9:23 pm
Forum: Bare metal, Assembly language
Topic: Bare Metal ZX81 emulator
Replies: 30
Views: 9392

Re: Bare Metal ZX81 emulator

Ahhhh... at the risk of being pedantic... no no no! Emulating the electron beam timings is a big part of the challenge of the ZX81. It really shouldn't be much more work than what you have already, you "just" have to determine whether a signal (including vsync, hsync) is actually coming from the "ZX...

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