Sunday, July 28
One Man's Treasure Is Another Man's Treasure Edition
- An exposed password let a hacker access internal Comodo files. (Tech Crunch)
What's a Comodo, you ask?
Comodo is a leading issuer of SSL certificates.
So this isn't good.
The security researcher only found customer correspondence and not private keys, so it's probably not a disaster.
- Intel Xe graphics part numbers have leaked, indicating configurations up to 512 cores unless they didn't. (WCCFTech)
If they get the rest of the architecture and the drivers right - which they haven't so far - that would likely be competitive in the high mid-range like the AMD 5700 XT or the GTX 2070 Super. But those boards are out right now and this is just a part number.
- How to use AWS for normal people.
- Userbenchmark responds to criticism over their bullshit. (Tom's Hardware)
I supposed "Fuck off AMD shills" counts as a response of a sort.
WAIT STOP GO BACK THAT'S A @&#*#@&$#@ MINDSET!!!!!!
Here's Mindset serial no. 854, complete and in perfect working order (the only thing that needed replacing was the fan), with original keyboard, mouse, joystick, expansion cartridges, software, and all documentation including programming guide and service manual. There's even a dump of the custom BIOSes available. (Several of them since it has two ROMs for the CPU and two embedded microcontrollers.)
Mindset 854 is a fully-expanded unit with 256k RAM and dual floppy drives. And one - count them - one game.
Anyway, they've gone back and scoured the warehouse and discovered more Mindset stuff, presumably in various states of completeness and repair.
Meanwhile, I've started on a BOM for the A750 as a sanity check. Not including the case, PCB creation and assembly, or power circuitry (which might be very simple - the H750 only uses 500mW at full load), it comes to A$44.56 in qty 1 so far. (Plus up to $25 in optional extras.*)
- STM32H750 microcontroller
400MHz Arm Cortex M7 with 1060k RAM. Might actually be 480MHz by the time I get anything working, because they're updating the stock with a new version.
- iCE40HX1K FPGA
Video upscaling and retiming; I'm proceeding on the basis that it will be needed.
- Intel 5M80Z CPLD
System controller, console video, and 74LS avoidance mechanism.
- USB2514 hub
This will convert one USB port from the microcontroller to four downstream ports. Another advantage is that it has built-in ESD protection so you're less likely to blow up the entire system just plugging in a keyboard.
- 2 x Winbond 8M NOR flash
One in QSPI mode for running code (read-only in normal operation), the other in SPI mode for read/write storage.
- 2 x VGA output
One full-colour graphics, the other just for a two-colour text console for programming and debugging.
- 2 x TinkerPort
DA-26 port combining 8-bit parallel, 4-wire serial, 5V and 3.3V power, fast and slow clock sources, and GPIO on whatever pins are left. One external for hacking, one internal for expansion.
- 1 x USB type B
Upstream connection to a PC or power supply. Might be a micro B instead. Carries both data (for programming / debugging / file transfers) and power (for power).
- 4 x USB type A
Two of the common two-high stacks. USB 1.0 only unless I add a an external PHY. Hmm. How much is an external USB 2.0 PHY anyway? Oh, A$1.90 qty 1. I'll add that to the list for consideration. Though with only 1MB RAM and 16MB storage you can transfer the entire system contents in or out over USB 1.0 in less than 15 seconds.
- 10 x indicator LEDs
Mostly because I can get 3mm LEDs in 10 different colours at about 2¢ each. Box of 500 for $10.74.
- 21 0.5% resistors for VGA DACs
15-bit colour on the main port, 6-bit on the console so you can have something resembling an amber or green screen.
Plus a bunch more 1% resistors for general pull up/pull down/current limiting/whatever.
The other possible addition is general-purpose serial ports. Not sure how much that is needed with upstream and downstream USB and the two TinkerPorts. But RS-232 drivers are dirt cheap (at least if you do a minimal null-modem connection), and RS-485 isn't too expensive.
Replacing the main VGA port with DVI-I is the single most expensive option; that's a $12.38 difference for the driver chip and the DVI-I connector itself, which is about three times the price of a DA-15.
Actually, the most expensive option is the custom keyboard. Those are US$160 each with Cherry MX Brown keyswitches, so probably three times the price of the computer itself.
I mean, what's the point in cloning your boot disk if you can't drop it in as a replacement if it fails?
Hell, I can't even figure out how I managed to INSTALL windows on that drive again, since the installers I have (7 and 7 SP1) refuse to work unless I format it to smaller than 2 TB.
Posted by: Mauser at Monday, July 29 2019 10:56 AM (Ix1l6)
I am still bitter over having my 486 (With the 5.25" and 3.5" combo drive.) and the Commodore 128 getting tossed while I was not at home.
Posted by: cxt217 at Monday, July 29 2019 11:28 AM (LMsTt)
Posted by: Rick C at Monday, July 29 2019 12:36 PM (Iwkd4)
Windows 7 should be fine with >2TB as long as you have a UEFI BIOS (which you evidently do) and the drive is partitioned with GPT - which it should be since you just cloned it.
Here's the install instructions.
"From inside Windows Setup, press Shift+F10 to open a command prompt window."
About to break my PINF rule here...
Posted by: Pixy Misa at Monday, July 29 2019 01:15 PM (PiXy!)
Posted by: Rick C at Monday, July 29 2019 01:30 PM (Iwkd4)
Still don't understand what's missing and why a pure forensic clone (at ~8 hours to run!) didn't do it.
Nice there's an MBRGPT tool, but Boo it only works in Win 10.
Maybe I should start a thread on my own blog so I'll have it as an easier reference.
Posted by: Mauser at Tuesday, July 30 2019 02:52 PM (Ix1l6)
Posted by: Pixy Misa at Tuesday, July 30 2019 03:21 PM (PiXy!)
(note, the links I grabbed are from some random sites based off a quick search, not sites I am particularly familiar with)
Posted by: StargazerA5 at Wednesday, July 31 2019 03:18 AM (jl9eJ)
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