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Search: Posts Made By: pandy71
Forum: Retrogaming General Discussion 21 June 2022, 00:30
Replies: 12
Views: 650
Posted By pandy71
You can give a chance to alternative approach:...

You can give a chance to alternative approach: https://upscale.wiki/wiki/Model_Database

Some of models give very neat results - like this https://imgsli.com/MzgxMTc/1/2
Forum: Hardware mods 09 June 2022, 16:41
Replies: 2
Views: 480
Posted By pandy71
OCS will run with 30..32MHz crystal - for more...

OCS will run with 30..32MHz crystal - for more flexibility you may wish to use some modern clock generator like those based on Sil5351 https://www.amazon.com/si5351/s?k=si5351 probably best under...
Forum: Amiga scene 28 April 2022, 01:58
Replies: 27
Views: 3,317
Posted By pandy71
https://www.amazon.com/Photodiode-Sensor-Module-De...

https://www.amazon.com/Photodiode-Sensor-Module-Detection-Arduino/dp/B00Y0L1DGK

IMHO it is also cheap and way faster than LDR i.e. can provide reliable and accurate results.

(personally to...
Forum: Coders. Asm / Hardware 28 April 2022, 01:18
Replies: 83
Views: 9,564
Posted By pandy71
Planar mode of was of course tradeoff between...

Planar mode of was of course tradeoff between graphic capabilities and amount of memory - original Amiga was designed to use 128KiB of RAM in total...
Forum: Amiga scene 27 April 2022, 00:20
Replies: 27
Views: 3,317
Posted By pandy71
LDR is very slow - usually response time is...

LDR is very slow - usually response time is somewhere between few ms and up to 100ms - comparable to measured display latency - if your goal is to measure latency then photoransistor at least...
Forum: Coders. Asm / Hardware 26 April 2022, 22:50
Replies: 83
Views: 9,564
Posted By pandy71
Dig then for 4164 technology as it was common...

Dig then for 4164 technology as it was common when Amiga become WIP:

(1981) Fairchild 4164 - support Page Mode
(1980) TI 4164 - support Page Mode
(1981) Toshiba 4164 - support Page Mode
(1982)...
Forum: Coders. Asm / Hardware 26 April 2022, 21:56
Replies: 18
Views: 1,691
Posted By pandy71
Once again - this is more likely corrupted HW...

Once again - this is more likely corrupted HW issue. Obviously black level is not sampled from RGB but from CVBS where CVBS is only CSYNC.

https://www.eecg.utoronto.ca/~tm4/rgbout.html...
Forum: Coders. Asm / Hardware 25 April 2022, 19:49
Replies: 18
Views: 1,691
Posted By pandy71
It will be easier if you describe your HW setup -...

It will be easier if you describe your HW setup - saw something like this before in one case - RGB on SCART added with CVBS - normally CVBS is used by Amiga to pass sync pulses so sync pulse is from...
Forum: Coders. Asm / Hardware 25 April 2022, 17:39
Replies: 83
Views: 9,564
Posted By pandy71
Technically Page Mode didn't exist in Amiga time...

Technically Page Mode didn't exist in Amiga time - it was introduced in some 41256 and later in 4464 DRAM's, FPM mode existed (safe assumption) in most of 44256 DRAM's - so technically next...
Forum: News 22 April 2022, 00:57
Replies: 311
Views: 25,890
Posted By pandy71
It is not misconception, it is impacting whole...

It is not misconception, it is impacting whole infrastructure by lowest common denominator - allocating time for slowest member.
2.4GHz is very busy part of spectrum, it is shared by many...
Forum: Coders. Asm / Hardware 21 April 2022, 01:42
Replies: 18
Views: 1,691
Posted By pandy71
It may be limitation of your display - VBI is...

It may be limitation of your display - VBI is usually 'underblack' or 'blacker than black'. With DC coupled signal or with improper black level acquisition black may be not fully black.
I would...
Forum: News 21 April 2022, 01:31
Replies: 311
Views: 25,890
Posted By pandy71
For sure - there is no technology given for...

For sure - there is no technology given for lifetime - even voltage in power line was raised relatively recently (after almost 100 years).
But for today seem Vulkan is quite appreciated by customers...
Forum: News 21 April 2022, 01:26
Replies: 311
Views: 25,890
Posted By pandy71
Well... i prefer to not involve believes in...

Well... i prefer to not involve believes in technical discussion - proposed IC is not substantially different form ESP8266 or ESP32.
All of them are 1x1, 2.4GHz, 20MHz BW. No 5GHz, no AX (and this...
Forum: News 20 April 2022, 00:04
Replies: 311
Views: 25,890
Posted By pandy71
? What is Amiga standard? Mesa? Warp? Isn't more...

? What is Amiga standard? Mesa? Warp? Isn't more sane is just to run Linux on Amiga?



Perhaps Maggie has no HW Vulkan capabilities but it can form hybrid approach especially if something like...
Forum: News 19 April 2022, 19:51
Replies: 311
Views: 25,890
Posted By pandy71
So at some point you are stuck with Linux (or...

So at some point you are stuck with Linux (or distant Linux fork Android) - with no access to HW you are forced to emulate at higher abstraction layer and as such deal with all limitations.
For...
Forum: News 19 April 2022, 17:29
Replies: 311
Views: 25,890
Posted By pandy71
Shortly - yes and no. Longer version: many...

Shortly - yes and no.

Longer version: many modern SoC's for sure offer substantially higher performance (thanks to hard(soft)cores) - there is only one issue and it is called NDA - if you have no...
Forum: support.Hardware 19 April 2022, 16:44
Replies: 13
Views: 866
Posted By pandy71
Vulgar only in heads of particular people ( :lol...

Vulgar only in heads of particular people ( :lol ), from semantic perspective it is neutral and from technical perspective valid approach - sometimes when via is partially corrupted (part of copper...
Forum: Nostalgia & memories 18 April 2022, 15:45
Replies: 8
Views: 1,333
Posted By pandy71
Issue is Data Bus - isolated (trough 74244 +...

Issue is Data Bus - isolated (trough 74244 + 74373 and named in Amiga as DRD), shared by CPU and chipset and controlled by Agnus. This is what make CPU access slow. There is no issue to use this...
Forum: support.Hardware 15 April 2022, 22:07
Replies: 13
Views: 866
Posted By pandy71
i know how this sound but sometimes blow works...

i know how this sound but sometimes blow works better than suck - you can give a chance to compressed air.




if you washed carefully PCB then corrosion should be already stopped - but...
Forum: News 15 April 2022, 21:40
Replies: 7
Views: 1,856
Posted By pandy71
Any suggestion how to achieve such feature? hope...

Any suggestion how to achieve such feature? hope you are aware of the fact that most if not all old video sources is 4:3 where most if not all modern displays are widescreen type (16:9, 16:10 and...
Forum: support.Hardware 14 April 2022, 21:12
Replies: 13
Views: 866
Posted By pandy71
Usually glass fiber brush or pen is used to clean...

Usually glass fiber brush or pen is used to clean PCB's.
Forum: Hardware mods 14 April 2022, 21:07
Replies: 184
Views: 40,208
Posted By pandy71
Verify DS for both, also you can give a chance to...

Verify DS for both, also you can give a chance to 74lv4046 from TI it is way faster than regular HCT and work with 5V.
Most of 4046 are quite slow - perhaps PLL can utilize NE564 with better...
Forum: News 13 April 2022, 21:27
Replies: 311
Views: 25,890
Posted By pandy71
Well, to be honest any new functionality for...

Well, to be honest any new functionality for Amiga, even incompatible and very niche is very appreciated by me so i was simply curious about this new baby from Apollo.
Of course this was also my...
Forum: support.Hardware 13 April 2022, 20:58
Replies: 13
Views: 866
Posted By pandy71
Based on your pictures it seem some via's may be...

Based on your pictures it seem some via's may be heavily deteriorated, be prepared to repair via's with very thin, fine solderable copper wire.

Use plenty of flux and perhaps consider to apply...
Forum: support.Hardware 13 April 2022, 20:52
Replies: 4
Views: 370
Posted By pandy71
There is no NTSC/PAL switch - all you can switch...

There is no NTSC/PAL switch - all you can switch is VSync frequency but not CPU clock and most importantly HSync frequency - i can imagine software written for NTSC which may not work correctly on...
Forum: News 12 April 2022, 21:07
Replies: 311
Views: 25,890
Posted By pandy71
Nice discussion but please correct me on two...

Nice discussion but please correct me on two things, first how ongoing discussion is related to 'Apollo Maggie 3D Chip' and secondly isn't approach where high level language (HLL) is used together...
Forum: support.Hardware 12 April 2022, 20:36
Replies: 13
Views: 866
Posted By pandy71
Use some form of preheating - probably thermal...

Use some form of preheating - probably thermal mass of your soldering iron is insufficient to deliver heat in areas with large ground area - as such you can't properly melt soldering alloy......
Forum: request.Apps 08 April 2022, 00:21
Replies: 0
Views: 618
Posted By pandy71
lws LHP HTML5 and CSS parser and render pipeline

Sorry - not sure where to place such thing - accidentally discovered this - perhaps it can be useful also for Amiga as it is tailored for small memory, limited processing power and overall available...
Forum: support.Hardware 03 April 2022, 21:48
Replies: 20
Views: 1,332
Posted By pandy71
Better to use hot air soldering station or pre...

Better to use hot air soldering station or pre heater and regular temperature controller soldering station - not so expensive i think - for easy desoldering there is pain free method with special low...
Forum: News 03 April 2022, 01:50
Replies: 311
Views: 25,890
Posted By pandy71
don't stop this - feel 30 years younger... so...

don't stop this - feel 30 years younger... so vibrant, passionate discussion... waiting for more......
Forum: News 31 March 2022, 19:46
Replies: 311
Views: 25,890
Posted By pandy71
Curious how Apollo Maggie 3D core compare to RPi...

Curious how Apollo Maggie 3D core compare to RPi BCM VideoCore and perhaps PowerVR SGX544 present in AM5729.
Of course i share same impression as you guys that it is slightly too late for modern 3D...
Forum: Amiga scene 19 March 2022, 17:43
Replies: 325
Views: 27,028
Posted By pandy71
You can make CHIP faster without loosing...

You can make CHIP faster without loosing compatibility with legacy DMA slot allocation - you could use faster RAM, interleaved banks, increase bus width and provide new DMA scheduller where "OLD" DMA...
Forum: support.Hardware 16 March 2022, 21:37
Replies: 3
Views: 237
Posted By pandy71
Firstly you need to remove battery from PCB,...

Firstly you need to remove battery from PCB, later try to neutralize electrolyte leaked from battery with some mild acid - citric acid (lemon juice) should be fine, after neutralizing you need to...
Forum: Amiga scene 12 March 2022, 14:09
Replies: 325
Views: 27,028
Posted By pandy71
Well, not sure about NZ law but in my country...

Well, not sure about NZ law but in my country company management can be under crime charges if they act in a way that will hurt company business - even if you do private business you can't hurt your...
Forum: Amiga scene 12 March 2022, 13:56
Replies: 325
Views: 27,028
Posted By pandy71
Once again - AGA was sane improvement to Amiga...

Once again - AGA was sane improvement to Amiga technology providing absolute minimum at the first half of the 90's - legacy compatibility was provided, new functionality also. It could be last...
Forum: Amiga scene 11 March 2022, 21:27
Replies: 325
Views: 27,028
Posted By pandy71
Interesting but still not solid source - there is...

Interesting but still not solid source - there is plenty speculations there partially only supported by facts and data. And at some point this support my previous opinion - Gould way of leading...
Forum: Amiga scene 10 March 2022, 22:20
Replies: 325
Views: 27,028
Posted By pandy71
This was kind of obvious way for Amiga -...

This was kind of obvious way for Amiga - integrate legacy HW within single chip and use general PC HW ecosystem or to provide Amiga world in PC IBM compatibles or to create new Amiga generation where...
Forum: Amiga scene 10 March 2022, 22:17
Replies: 325
Views: 27,028
Posted By pandy71
Well... plan can be random (unintentionally or...

Well... plan can be random (unintentionally or intentionally) - never said that Commodore behavior was not consistent - they made consistent decision that looks random to me...



Any source for...
Forum: Amiga scene 09 March 2022, 10:35
Replies: 325
Views: 27,028
Posted By pandy71
This is quite brave statement Bruce, i agree with...

This is quite brave statement Bruce, i agree with almost every word you've wrote till this moment but to be honest not this one - in fact all Commodore activities around Amiga proving something...
Forum: support.Hardware 04 March 2022, 15:47
Replies: 5
Views: 674
Posted By pandy71
Capacity is one side and ESR is also important -...

Capacity is one side and ESR is also important - older caps may have poor ESR (too high to efficiently reduce current ripple).
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