ruslan

7 ms·

31.
by ruslan 2y ago
Lattice's FPGAs are very nice. With an iCE40 you can have a full featured RISC-V soft-core (RV32IMFAC) at some 80 MHz.
32.
by ruslan 2y ago
What are the requirements for this OS ? Will it run on synthesizable RISC-V core with 512K SRAM ?
33.
by ruslan 2y ago
> In modern times the closest we have to Inferno is Android, which traces back to Bell Labs original goal to target Inferno against Sun's Java efforts on the market. That's interesting, I never looked on Android at that angle.
34.
by ruslan 2y ago
This Uxn thing reminds me Inferno[1] - a VM based operating system from Bell Labs with its own programming language, GUI and networking protocol. It can run on may hardware with just 1 MB of RAM. But Inferno is far more than that, it's
35.
by ruslan 2y ago
I've thought a little bit more about this case and came to conclusion that to mitigate this attack paging agorimths can be improved by using redundancy and CRC checks with not too much overhead. Yet it takes a lot of work and investmen
36.
by ruslan 2y ago
AFAIC, reflashing BIOS won't give you anything, you need to sign it first with proper private key which is checked by the CPU hardware before execution begins. This EMI trick fools CPU itself and I cannot see how it can be fixed, unles
37.
by ruslan 2y ago
It seems to me the mentioned "Principles of Operation" document describes a virtal machine compatible with good old System/370 what's now known as IBM z/Architecture. But the Telum CPU itself runs on Power10 cores o
38.
by ruslan 2y ago
Has anybody noticed that malformed vsetvli instruction is using x0 register as destination (returning vl to be used by app) which in most RISCs is hard-wired zero. Very unlikely that writing to zero reg was not tested during design verifica
39.
by ruslan 2y ago
Does this boot procedure work with EFI/UEFI ? If so, does UEFI supervisor emulate swithing real/protected/long modes or does it go in real hardware ?
40.
by ruslan 2y ago
Although sending program to display is extremely dangerous idea, it seems it's inevitable. The next "DisplayPort" will receive byte-code to render picture, but not the pircture itself as it is right now.
41.
by ruslan 2y ago
Knowing about Fidonet is too much. But a little bit of UUCP definitely won't hurt. ;)
42.
by ruslan 2y ago
Excellent find! The user should have consulted HN before diving into the problem. :)
43.
by ruslan 2y ago
Did not know that. Indeed it's very useful. Thank you!
44.
by ruslan 2y ago
U-Boot supports Zmodem ?
45.
by ruslan 2y ago
You are right, but it's possible to connect RS-422 to RS-232 using just proper wiring [1]. Basically, same three wires and one loop wire for RX+ to ground. It's not reliable and not recommended, but works and would solve the probl
46.
by ruslan 2y ago
The faxing program you were using should have a terminal feature which was used to setup modem and to dial BBSes. :)
47.
by ruslan 2y ago
Yes, you can transfer files via COM port in MS-DOS using COPY command, but errors may occur. :) Also you have to switch port to 8-bit binary mode and turn off flow control. Don't remember how to do that exactly. Default was 7 bit XON&#
48.
by ruslan 2y ago
There are plenty of mini-DIN connectors and serial cables for mac on ebay. You need just three wires for serial line to work. I would strip the wires and plug them in without any connector. :)
49.
by ruslan 2y ago
I think in this particular (macbook) case the problem was lack of proper software. Yet, I recall if there was modem installed, a terminal software had to be present as well.
50.
by ruslan 2y ago
Arn't there a serial (COM) port available on that laptop ? It was kind of ubiquitous at those days. This website [1] says there were two of them. Solving the probem with Zmodem would be trivial. The software (terminal) is already there
51.
by ruslan 2y ago
I would love to peek for a moment into parallel Universe where OS/2 took place of nowadays Linux.
52.
by ruslan 2y ago
It's hard to find a machine that does not have a remote control nowadays. Also I'm sure there are tons of RSA key activated software running on that machine. But the real kill switch would be people who know how to deal with such
53.
by ruslan 2y ago
I totally like their example, let me cite it here: ------- MY PROGRAM v1.23 - A program which will do anything for anybody. Will run in only 2k of memory. Can be run from the command line, or installed as a TSR. Completely menu
54.
by ruslan 2y ago
I'm kind of going the same direction, but different route. My design is based on VexRiscv and all hardware is written in SpinalHDL. It does not run Linux yet because of limited SRAM (512KB) on my Karnix board, but it has Ethernet and H
55.
by ruslan 2y ago
In early 90th I was an OS/2 fanboy, I did a lot of automation in REXX. I'm not sure REXX syntax resembles PL/I which was then heavily used at the place I worked on "big iron". PL/I used to be more verbose, uppe
56.
by ruslan 2y ago
> Multics didn't fail: it accomplished almost all of its stated goals. Unix succeeded too, solving a different problem. Hm.. what problems Multics had been solving then ?
57.
by ruslan 2y ago
Yes, it was one node serving 8 lines (modems) connected by 8 port "Hydra" ISA board with 16850 FIFO UARTs. Binkley/2 could automatically distinguish between unattended mailer call or user call and spawned Maximus if user was
58.
by ruslan 2y ago
I ran a BBS and Fidonet node (2:5077/7) from 1994 till 2001, I was 17 when I started. At that time I worked as an operator at local "computer centre" (вычислительный центр) and used their resources, namely multilined (8 lines
59.
by ruslan 2y ago
I would suggest the following route: 1. Clone this educational repo https://github.com/yuri-panchul/basics-graphics-music - a set of simple labs for those learning Verilog from the scratch. It's written by Yuri Pa
60.
by ruslan 2y ago
I vote for Ben Eater and for a number of others 8-bit guys.

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