I have a faulty ASIC, which displays no BRIGHT signal, so only 64
colours available. But I need a working ASIC first, before I can donate
mine.
LCD
Am 10.06.2012 22:52, schrieb Thomas Harte:
Maybe we should get some samples sent into the guys at visual6502.org
who, despite the name, are attempting to image large swathes of old 8
bit ICs. See http://visual6502.org/donate_hw.html — they seem fine
with broken hardware so does anybody have any faulty ASICs? Or spares?
Possibly even just for sale rather than donation?
On 10 June 2012 08:02, Adrian Brown<[email protected]> wrote:
A nice pdf of the logic gate layout would be nice ... ;)
-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of Tommo H
Sent: 10 June 2012 04:31
To: [email protected]
Subject: Good resources for learning about the ASIC?
I'm currently partway through The ZX Spectrum ULA: How To Design a
Microcomputer, which is the book partly researched by photographing and
reconstructing the exact IC layout of the Spectrum's ULA. So it goes
into a lot of detail about how ICs were produced in general, the nature
of ULAs, the Spectrum's design constraints, how they therefore ended up
laying things out and all that sort of stuff. As someone who has
previously looked no lower than product data sheets it's fascinating.
Does anyone know of any similar sort of details about the Sam's ASIC?
Presumably it's a similar process - application-specific interconnects
added to a generic, previously manufactured base - but benefitting from
seven years of advances in density? Though the Sam's design process
seems to have been quite extended, so maybe they used some other
process?
I guess nobody has the resources to have photographed one but what
documentation do we have? Google's not turning much up.
