9 Results for "TTL computer"

Parts, parts, parts...
Log from Discrete YASEP
Circuit design is like speaking a language. You have vocabulary (parts) made of letters (transistors and gates), grammar (how a few parts interact to provide a macrofunction), sentences, paragraphs... The semantic is what the whole is meant to do. In...

Blacklink cable schematic
Log from Vintage Z80 palmtop compy hackery (TI-86)
at a multi-day loss for any idea how to proceed, I wrote several draft log entries touching on the concepts I discovered in the last post... Some of those are much more detailed, including some schematics and explanations of the bit-level link protocol......

We have data! 19200bps!
Log from Vintage Z80 palmtop compy hackery (TI-86)
heh... but only if I transmit only two bytes per second. And it also doesn't handle low baudrates well, which makes absolutely no sense in the software. I'm at quite a loss. Latest theory may have to do with voltage levels... yeah, the blacklink either...

OBD, oh blah dah
Log from hackavan
Update 3-3-19: Probed. See the bottom. Update 3-2-19 at the bottom. In another weird coincidence, it would seem my van does not, in fact, use CAN-bus, but in fact uses SAE-J1850 PWM (ooh, cool copy-paste result! I'mma leave that.) So, what's the weird...

Asynchronous Serial and Terminal Emulator Support
Log from VGA Graphics Over SPI and Serial - VGATonic
Today, the ATTiny 2313a comes alive!Serial support (or, as I discussed today in the Hacker Channel, other names you might know it as - "Asynchronous Serial", "RS-232 TTL", "TTL Serial", etc.) was always on the roadmap for VGATonic, but my Terminal Emulator...

Logic Implementation and Analog Simulation
Log from VHDL/Verilog to Discrete Logic Flow
Basic logic gate implementation The synthesis step transforms the digital circuit into a spice netlist based on logic cells. To complete the circuit and allow analog simulation we have to actually implement the logic on devices level. ---------- more...

Displays: How about Nixie Tubes?
Log from Star Trek: The Mirror Universe Pinball
I can’t claim originality here... as I remember the XENON machine at a past TPF which had NIXIE tubes instead of the standard VFD displays. I always thought they were cool. Now that I’m designing Star Trek: The Mirror Universe; I’m thinking that I want...

Usage Commands Found!
Log from Reverse Engineering Toshiba Flashair Wifi SD card
After digging through the data and extracting what I can from the firmware update file I found the following usage data.. It still needs to be cleaned up, but it does help to identify data on the device.Usage commands found in no particular order.. (needs...

Firmware hacking and adding new applications
Log from Camera badge for Supercon 2017
Firmware APIs These are not documented here, but in the globals.h include file. This avoids the need to keep this page synchronised with the current firmware version as features are added or modified. Tools required Microchip MPLABX (4.0x) and XC32...