hardware

Mechanical Sympathy Symphony

RAM

  • ddr5 has on die ecc

SRAM

  • multiple transistors for faster memory (cpu cache)

DRAM

  • transistor and capacitor(needs refresh to not leak)

HBM

  • high bandwidth memory stacked in 3D

GDDR

  • GPU ram

CPU

Intel

  • haswell added hardware lock elision (HLE) with intel TSX
    • disabled in microcode due to security issues with instructions added later for mitigations
    • QEMU has options for passthrough tsx-ctrl
    • RSPCS3 used it for large framerate improvements

Backdoors

  • ubiquity devices(unifi)
    • any calvium processor
    • amazon hsm
  • intel management engine
  • amd platform security processor
  • firmware level malware (disk controller, usb controller, flashable uefi/bios etc)
  • side channel data transmission such as AM https://github.com/fulldecent/system-bus-radio or differential power analysis
  • printers watermark pages and refuse to print without yellow ink

defective

  • Commonly defective (cheap companies and lack of quality control even with standards)
    • HDMI cables (no hdcp, artifacts and non spec bandwidth limits)
    • USBC charging (will not charge certain devices and can even damage ex. Nintendo Switch)
      • lacking resistors usually to inform device of power
    • refurbished drives (smart data wiped)
      • fake drives sold on amazon/walmart/ebay with custom firmware to trick os
    • Used GPUs (cryptocurreny mining wear and cheap factory solder)

keyboards/switches

firmware

libreboot

  • Dell latitude 6530 requires me-cleaner injected into release
    • injection script in lbmk disables me automatically
    • thermal/power issues when workload is started quickly after boot (compiling code)
      • reverted back to stock firmware
  • seabios with grub rom requires escape key for grub boot menu

GPS

  • CoCom Limits is the limit placed on GPS devices that disables tracking when it is faster than 1,000 knots and/or an higher than 18,000m.
    • Intended to prevent GPS in intercontinental ballistic missile applications.
    • SDR may not enforce limits (ex. GNSS-SDR)

SDR

  • krakensdr passive receiver ITAR restricted and censored after IEEE spectrum paper

storage

  • Project silica (quartz/glass hard drives)
  • intel optane persistent high write nvme SSD cache

sim

  • iphone14 removed sim card for esim.

clock

gpu

  • egpus for external gpu
    • OCuLink (optical-copper link) for PCIe connectivity
  • dual issues instructions level pointer for memory and compute in a single cycle

ISA

  • RISC-V
    • free ISA
    • 32/64/128(wip) address spaces
    • 32 (16 embeded) int registers
    • 32 floating point registers
  • Instructions are decoded into micro ops from bit patterns and executed via ports
  • ARM
    • thumb instructions are reduced to 16bit with half the registers
      • x86 equivalent is operand size prefix as it is cisc

sim

agriculture

  • /r/unclebens rice packets to cultivate mushrooms

radio

  • BaoFeng programmable in unregistered frequency with CHIRP

firearms

  • 'auto sear' plastic converts gun to fully automatic
  • tannerite is used for exploding targets
  • 50 yard zero raises 1.5inches and zeros again at 200
  • 100 yard zero drops after
  • LE uses 36 yard

vehicle

  • forscan
    • Require extended license for modification. can request multiple.
    • Add user to the dialout group (debian/fedora) or the uucp (arch) group then reboot.
    • wine v8.6.0 (used 8.3), forscan v 2.3.53
      • switch should be in the HS position. Forscan will prompt for MS toggle.
      • ln -s /dev/ttyUSB0 ~/.wine/dosdevices/com1
      • under Configuration and Programming
        • EASY MODE (Regular configuration of popular newer models)
          • Run the module APIM
            • edit siriusxm travel link to off
          • BdyCM
            • Fog lights on (bambi mode: high and low beams)
        • MANUAL (AS BUILT) not recommended without spreadsheet of values
          • MAKE SURE TO HIT SAVE ALL BEFORE ANY CHANGES name the file stockMODULE.abt
          • Run the Module BdyCM(AS BUILT FORMAT)
            • To disable double honk Edit the entry for: 726-41-02 and change the FIRST box to 0000 instead of 0001. Then click write. LAST DIGIT
          • Run the module IPC(AS BUILT FORMAT)
            • To disable seatbelt chime Edit the entry for IPC 720-01-01 Edit the SECOND box to have the THIRD digit be 0 (2 for driver only, 4 is passenger, 0 is both). Then click write
  • 2021 F150 has 'self driving' BlueCruise

board games

  • pathfinder system like dnd 3.3
  • dnd 5e cap 20
  • whitewolf d10 had games in 90's

health

  • supra-supramaximal inspiration for curing hiccups (breathing technique that increases co2 in blood)