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Forum: Amiga scene 12 October 2017, 13:38
Replies: 89
Views: 7,048
Posted By robinsonb5
That is looking superb - very polished!

That is looking superb - very polished!
Forum: OT - Technical 12 October 2017, 10:37
Replies: 8
Views: 168
Posted By robinsonb5
Ah - thanks for that everyone - makes sense! I...

Ah - thanks for that everyone - makes sense!
I never had a 1084 or similar monitor so now I'm wondering how I came to have this cable! Must have been in amongst a box of random Amiga stuff I was...
Forum: OT - Technical 11 October 2017, 19:08
Replies: 8
Views: 168
Posted By robinsonb5
Mystery cable? 6-pin DIN to 23pin DSub?

In among my collection of retro stuff I've come across this cable, and I don't remember acquring it, and I'm not sure what it's for!

One end is a male 6-pin DIN male, as found on C64 disk drive...
Forum: News 09 October 2017, 16:03
Replies: 17
Views: 2,206
Posted By robinsonb5
You can do a lot better than PWM with an FPGA -...

You can do a lot better than PWM with an FPGA - both the Minimig and MIST use a resistor/capacitor filter fed from a GPIO pin for audio, and most cores use a sigma/delta modulator rather than PWM to...
Forum: support.Hardware 06 October 2017, 13:09
Replies: 17
Views: 308
Posted By robinsonb5
Is this a stock CD32 or do you have any...

Is this a stock CD32 or do you have any expansions?
Forum: Retrogaming General Discussion 05 October 2017, 01:06
Replies: 27
Views: 750
Posted By robinsonb5
Anyone played Smash Hit on tablets / phones? ...

Anyone played Smash Hit on tablets / phones? When I first played it, I was immediately reminded of Vaxine! I keep promising myself that when free time eventually allows I will try and construct an...
Forum: Retrogaming General Discussion 01 October 2017, 14:02
Replies: 27
Views: 750
Posted By robinsonb5
No idea - I never really played E-Motion but I'm...

No idea - I never really played E-Motion but I'm a big fan of Vaxine - that and Zeewolf 2 are my goto games if I've got a random 15 minutes to burn!
Forum: Coders. General 28 September 2017, 10:19
Replies: 306
Views: 13,956
Posted By robinsonb5
More likely using bitplane pointers and scroll...

More likely using bitplane pointers and scroll registers to select a specific line and horizontal offset in a set of pre-scaled road textures.
Forum: support.Hardware 16 September 2017, 01:00
Replies: 2
Views: 114
Posted By robinsonb5
If it's working fine once warmed up it could just...

If it's working fine once warmed up it could just be a dry or cracked solder joint.
What does the noise "look" like on the sample?
Do you noticably lose bass when it's noisy?
Forum: support.Hardware 06 September 2017, 01:35
Replies: 41
Views: 9,859
Posted By robinsonb5
I think the version you have is the latest one,...

I think the version you have is the latest one, but I couldn't swear to it now. I know I changed the button mapping after your initial feedback, but I think I sent you an updated version with that...
Forum: support.Hardware 04 September 2017, 15:09
Replies: 41
Views: 9,859
Posted By robinsonb5
I built an adapter using a PSOC4 prototype board...

I built an adapter using a PSOC4 prototype board -
Background information here:

http://retroramblings.net/?p=853

Wiring details: http://retroramblings.net/?p=912
Project on Github: ...
Forum: Amiga scene 02 September 2017, 18:51
Replies: 26
Views: 2,661
Posted By robinsonb5
Would be there, but alas once again life's...

Would be there, but alas once again life's getting in the way. Hope it goes well!
Forum: support.Hardware 28 August 2017, 23:38
Replies: 54
Views: 1,347
Posted By robinsonb5
I don't think you can read anything into the...

I don't think you can read anything into the sound circuit still working - the buzzer is driven from the Amiga's step signal, and would still work if the rest of the Gotek was missing.
Forum: Coders. C/C++ 18 August 2017, 23:55
Replies: 10
Views: 376
Posted By robinsonb5
It's been a while, so I'm not sure about this -...

It's been a while, so I'm not sure about this - but doesn't "avail flush" do just that, provided no applications currently have the library open?
Forum: support.Hardware 16 August 2017, 00:59
Replies: 15
Views: 501
Posted By robinsonb5
Nice going! :) You're probably already...

Nice going! :)



You're probably already doing this if you're using interrupts, but when you drive the middle mouse button pin high, do it by putting the arduino in input mode with pullup...
Forum: support.Hardware 11 August 2017, 10:28
Replies: 15
Views: 501
Posted By robinsonb5
Yeah, it doesn't discard the LSBs, it simply...

Yeah, it doesn't discard the LSBs, it simply briefly re-uses them for wheel signals, during a vblank interrupt, and resets them again long before the system reads the mouse counters again during the...
Forum: support.Hardware 10 August 2017, 18:39
Replies: 15
Views: 501
Posted By robinsonb5
I think the Cocolino is an evolution of Eyetech's...

I think the Cocolino is an evolution of Eyetech's EZMouse, which was originally my design. What I did was have the microcontroller use PotX as a select signal, similar to how a Megadrive joypad...
Forum: Coders. Asm / Hardware 09 August 2017, 11:22
Replies: 32
Views: 2,076
Posted By robinsonb5
I'll definitely take a look when time allows -...

I'll definitely take a look when time allows - nice work!
Forum: Coders. Asm / Hardware 04 August 2017, 16:46
Replies: 48
Views: 4,315
Posted By robinsonb5
Yup, the 3-button pads are really easy to...

Yup, the 3-button pads are really easy to support: pin 7 high = buttons B & C on pins 6 and 9. Pin 7 low = buttons A and Start on pins 6 & 9. So yeah, it still needs software support. (The six...
Forum: Coders. Asm / Hardware 04 August 2017, 12:51
Replies: 48
Views: 4,315
Posted By robinsonb5
Good point - so the troublesome games may in fact...

Good point - so the troublesome games may in fact be those that aren't writing to POTGO at all.
Forum: Coders. Asm / Hardware 04 August 2017, 10:39
Replies: 48
Views: 4,315
Posted By robinsonb5
You can read two buttons of a megadrive pad...

You can read two buttons of a megadrive pad without modifications. Technically it will be drawing a small amount of power from a signal pin rather than the power pin to run its multiplexing...
Forum: Coders. Asm / Hardware 03 August 2017, 01:55
Replies: 48
Views: 4,315
Posted By robinsonb5
Look for writes to POTGO ($dff034). Normally to...

Look for writes to POTGO ($dff034).
Normally to have the middle and right mouse buttons (or two extra joystick buttons on pins 5 and 9) readable on each port, you'd write $ff00 to POTGO - if bits 8,...
Forum: support.Games 29 July 2017, 01:33
Replies: 9
Views: 446
Posted By robinsonb5
The version I've been testing with is the Quartex...

The version I've been testing with is the Quartex crack.
MD5 5b8b0e7b8586779f54d74eb9928599c5 if you want to be sure it's the same one.
Forum: support.Games 28 July 2017, 13:40
Replies: 9
Views: 446
Posted By robinsonb5
If memory serves, Zeewolf 2 will benefit greatly...

If memory serves, Zeewolf 2 will benefit greatly from fast RAM, but Zeewolf won't. Zeewolf 2 runs pretty well on a fast RAM equipped Minimig core and absolutely flies when you allow the CPU to...
Forum: support.Games 28 July 2017, 00:50
Replies: 9
Views: 446
Posted By robinsonb5
Zeewolf 2 can make use of Fast RAM, and runs much...

Zeewolf 2 can make use of Fast RAM, and runs much better when it does. I don't know much about the Furia - does it have (autoconfiguring) Fast RAM?
Forum: Nostalgia & memories 19 July 2017, 13:17
Replies: 101
Views: 6,491
Posted By robinsonb5
Now that's an interesting point - was the ST...

Now that's an interesting point - was the ST significantly better in that regard?
Forum: Coders. General 18 July 2017, 17:14
Replies: 306
Views: 13,956
Posted By robinsonb5
32K of fast RAM would have been great - or even...

32K of fast RAM would have been great - or even better, making the trapdoor slot into real fast RAM - but I don't think even that would have opened up enough DMA slots to do hires HAM6.
Forum: Coders. General 18 July 2017, 15:46
Replies: 306
Views: 13,956
Posted By robinsonb5
I'd have to disagree there - given the...

I'd have to disagree there - given the limitations of technology, memory speed and cost at the time, and compared with everything else of the same era, the OCS chipset is remarkable. It should...
Forum: Coders. General 18 July 2017, 13:47
Replies: 306
Views: 13,956
Posted By robinsonb5
Agreed - indeed, most didn't even use the...

Agreed - indeed, most didn't even use the Blitter, since relying on it would have restricted the market for the game.



I'm not sure just filling the SIMM sockets counts as "crazy mods" - but...
Forum: Coders. General 18 July 2017, 13:29
Replies: 306
Views: 13,956
Posted By robinsonb5
The custom chips can't access it - the point you...

The custom chips can't access it - the point you seem to be missing is that the STe's blitter *can* access the expanded RAM.



You've just been given one scenario where it doesn't.


...
Forum: support.Other 16 July 2017, 02:08
Replies: 14
Views: 796
Posted By robinsonb5
If they're squealing, they probably have a layer...

If they're squealing, they probably have a layer of mould on the surface which gets scraped off by the heads on the diskdrive. That mould builds up on the heads and then causes them to leave the...
Forum: support.Hardware 16 July 2017, 01:59
Replies: 40
Views: 2,875
Posted By robinsonb5
The Zorro slot can monitor the CPU writing to...

The Zorro slot can monitor the CPU writing to chip RAM but it can't monitor what the chipset's doing, because that's a separate bus. So the Action Replay can tell what the CPU's written to a...
Forum: Hardware mods 10 July 2017, 15:25
Replies: 10
Views: 518
Posted By robinsonb5
I'm not 100% sure but I think your problem here...

I'm not 100% sure but I think your problem here is that you're using a buzzer that has internal driver circuitry, rather than just a transducer.
Kipper used this part: ...
Forum: MarketPlace 30 June 2017, 01:56
Replies: 4
Views: 335
Posted By robinsonb5
OK here's what I've got. The coffee-coloured one...

OK here's what I've got. The coffee-coloured one at the bottom needs a new left-mouse-button microswitch, and the Golden Image optical top left is missing the pad (I must have a go at printing a...
Forum: MarketPlace 29 June 2017, 17:22
Replies: 4
Views: 335
Posted By robinsonb5
I have a few - remind me if I forget, but I'll...

I have a few - remind me if I forget, but I'll try and remember to dig them out tonight and see what I've got.
Forum: Amiga scene 29 June 2017, 14:49
Replies: 295
Views: 14,882
Posted By robinsonb5
At first I couldn't see the point of this at all...

At first I couldn't see the point of this at all - but the more I think about it, the more I can see the possibilities. Think of the second thread less as a second CPU for multiprocessing as we...
Forum: Coders. General 21 June 2017, 01:06
Replies: 14
Views: 853
Posted By robinsonb5
We still have the problem of assembling a 16-bit...

We still have the problem of assembling a 16-bit word from 16 independently selected texture pixels - so still lots of masking and shifting.
Forum: Coders. General 20 June 2017, 18:15
Replies: 14
Views: 853
Posted By robinsonb5
I've written a raycaster but not done 3D graphics...

I've written a raycaster but not done 3D graphics with vectors. The big draw of raycasting is simplicity - a simple step-by-step procedure for each column on the screen tells you which walls have to...
Forum: Coders. General 20 June 2017, 18:05
Replies: 14
Views: 853
Posted By robinsonb5
Sure, that's doable if you're rendering walls...

Sure, that's doable if you're rendering walls with flat shading - but as soon as you introduce texture mapping into the mix you have loads of shifting and masking to deal with before you can write a...
Forum: Coders. General 19 June 2017, 17:45
Replies: 14
Views: 853
Posted By robinsonb5
Nothing per se - except that (assuming your rays...

Nothing per se - except that (assuming your rays are intersecting with vertical walls) you're processing the scene one column at a time, which is horribly inefficient if you're rendering to a planar...
Showing results 1 to 40 of 510

 
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