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DL238 Quantel HAL Express Restoration Part 2

  Рет қаралды 3,688

DextersTechLab

DextersTechLab

Жыл бұрын

In Part 2 of the Quantel HAL Restoration i detail what was done to the HAL to get it into a working state, detail some of the built in diagnostics and give you a very quick tour of the system before we tackle the big problem... the Dylan disk array which i will be looking at in Part 3!
Discord:
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Patreon:
/ dexterslab2013
Twitter:
/ dexterstechlab

Пікірлер: 34
@gordonm2821
@gordonm2821 Жыл бұрын
I know you would never design such a board from scratch and will have building blocks from a previous generation where you could consolidate things into higher density FPGAs away from discreet logic or lower density FPGA…but… Total respect to old school Quantel R&D guys like Rob S and Neil H who I have met at Newbury in the past and all the other colleagues who would see a sea of programmable logic as a normal day in the office. It was Rob who told me the story of needing to create a license key for a specific functionality on a Paintbox chip so used his home phone number as the enabling key and Neil designed one of the boards on the Mirage which Neil dropped into conversation when a colleague said he used to drive round Europe in a van with one rigged up in the back (from faded memory, refresh of DRAM a bit ropey now). It is also interesting seeing ‘Quantel’ branded ASICs rather than FPGA which was quite common in the 90s across many broadcast manufacturers.
@DextersTechLab
@DextersTechLab Жыл бұрын
Hi Gordon, thanks for your comments. You are clearly someone who was involved with the Quantel story, i have a Discord server where many ex-Quantel engineers are present. I would love you to join and maybe comment on stories from Q and some of the things our community is upto. There is a link to it in the video description!
@Bassquake76
@Bassquake76 Жыл бұрын
Bonkers amount of chippery! So many possible points of failures, some good engineering there.
@GregorPQ
@GregorPQ Жыл бұрын
This is highly interesting, thank you for sharing!
@memadmax69
@memadmax69 Жыл бұрын
MMMM, I love 90's circuitry.
@tekvax01
@tekvax01 Жыл бұрын
The keyers in the Henry were amazing!
@DextersTechLab
@DextersTechLab Жыл бұрын
So i keep hearing!
@hateWinVista
@hateWinVista Жыл бұрын
82 FPGAs, that's the finest hardware p0rn right there.
@ricardobornman1698
@ricardobornman1698 Жыл бұрын
Beautiful machine.
@DextersTechLab
@DextersTechLab Жыл бұрын
The Henry is too but i really don't like the user interface, HAL has a timeline similar to modern editors that hopefully you will see in a future video!
@DAVIDGREGORYKERR
@DAVIDGREGORYKERR Жыл бұрын
I hope that you are able to get your system back up and running some time soon.
@DextersTechLab
@DextersTechLab Жыл бұрын
Thank you, I am hopeful too!
@frankowalker4662
@frankowalker4662 Жыл бұрын
Awesome stuff. You've done a brilliant job with HAL. :)
@DextersTechLab
@DextersTechLab Жыл бұрын
Thank you! The Disk array though is going to be tough work i can just sense it!
@AppliedCryogenics
@AppliedCryogenics Жыл бұрын
Wow, that video board seems like an extreme example of throwing money at a problem. Such boards are often conformally coated, having come out of cutting-edge military tech with nation-state funding.
@dylanpriest5742
@dylanpriest5742 Жыл бұрын
Can you show us the BBC and ITV quantel paintboxes because you're an awesome KZfaqr. 👌
@DextersTechLab
@DextersTechLab Жыл бұрын
I have loads of Quantel Paintbox videos in this playlist, i hope you enjoy them! kzfaq.info/sun/PLs4emDoNAn3FzkI8Eemm6o1AgljVDvq6i
@Spritetm
@Spritetm Жыл бұрын
Wow, those FPGAs are tiny! Only 208 LUTs (so 17K'ish LUTs in total for the 82 FPGAs on the board); and I imagine those Raytheon chips are external multipliers. Nowadays you could probaby replace all those FPGAs and multipliers with an USD10 ECP5 or so FPGA and have room to spare to put emulation for that Transputer in there as well.
@BeauTardy
@BeauTardy Жыл бұрын
Whenever you get one of these Hals to work you might be able to read some of my old Archive Reels from the MO disks you xferred. :)
@DextersTechLab
@DextersTechLab Жыл бұрын
Good to hear from you Beau! Yes, the problem is though the video is not stored on the MO disk which was probably archived to a Digibeta tape to be kept with the MO.
@BeauTardy
@BeauTardy Жыл бұрын
@@DextersTechLab you're probably right. It makes sense that an 'Archive Reel' would just be edit points from the tape timecode now that I think of it...
@SR-cq4hd
@SR-cq4hd Жыл бұрын
Love
@DAVIDGREGORYKERR
@DAVIDGREGORYKERR Жыл бұрын
If only Quantel had used 82 Transputer processors it might have been better but the chips mig be unobtainium.
@heinrichhein2605
@heinrichhein2605 Жыл бұрын
Amazing as always, could watch hours of this kind of stuff, thanks!!! But i have one small thing, the intro audio fade is a bit fast and to abrupt, it cuts also to early for me if you can extend the L Cut that would be nice you can make a slower Audio Fade and the ending should not clash with your introduction. You can absolutely disagree with my opinion it is just a suggestion
@DextersTechLab
@DextersTechLab Жыл бұрын
noted about the intro, i try and leave a bit of time for the edit but it doesn't always work out.
@heinrichhein2605
@heinrichhein2605 Жыл бұрын
@@DextersTechLab i know it is not easy and if you just doing and cutting you don't notice it. But im not expert, probably everyone would have a different option
@DAVIDGREGORYKERR
@DAVIDGREGORYKERR Жыл бұрын
I wonder can you not use 100TiB Data Centre SSD drives for use with the QUANTAL HAL plus an associated Array Controller Card.
@DextersTechLab
@DextersTechLab Жыл бұрын
Sadly not David, 25 year old tech needs 25 year old parts!
@DAVIDGREGORYKERR
@DAVIDGREGORYKERR Жыл бұрын
@@DextersTechLab I wonder if it would be possible to build something around a Raspberry Pi IV 8GB SBC to do some of the work that the Dillian Array used to do or get hold of another QUANTEL Paintbox that has been tossed in the skip for parts,
@DextersTechLab
@DextersTechLab Жыл бұрын
Yea that would be perfect. Quantel only made 2500 Paintboxes over 25 years so they are rare beasts. We are working on the Dylan array, hopefully we can get mine at least partially working and then work out what to do after that. There will be a video soon on the Dylan so will make sure i detail all the ideas we have.
@merseyviking
@merseyviking Жыл бұрын
Java?! Quantel came a long way from Pascal, didn't they?
@DextersTechLab
@DextersTechLab Жыл бұрын
They went a very long way with Pascal with most of the Paintbox software written with it. The Java is very interesting, allowing plugins to be written for Paintbox
@merseyviking
@merseyviking Жыл бұрын
@@DextersTechLab Also makes for much easier reverse engineering too...
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