3015 Results for "%E3%80%8A%EB%AC%B8%EC%9D%98OIO%E2%96%B35793%E2%86%977458%E3%80%8B%EA%B0%95%EB%82%A8%EB%9E%80%EC%A0%9C%EB%A6%AC%E3%82%84%E2%88%ABfall%EA%B0%95%EB%82%A8%EB%A3%B8%E3%8E%94%EC%84%A0%EB%A6%89%EB%9E%80%EC%A0%9C%EB%A6%AC%EA%B0%95%EB%82%A8%EB%9E%80%EC%A0%9C%EB%A6%AC%EB%A3%B8%E3%85%94 %E2%92%AF%EA%B0%95%EB%82%A8%EB%9E%80%EC%A0%9C%EB%A6%AC%EB%A3%B8eldest %EC%84%A0%EB%A6%89%EB%9E%80%EC%A0%9C%EB%A6%AC%EB%A3%B8%E2%93%A1%EC%84%A0%EB%A6%89%EB%9E%80%EC%A0%9C%EB%A6%AC%E2%96%A1%E3%83%A4gloom"

Updates to Boot Menu on PSoC
Log from 3-Chip Z80 Design
It's been a while. I plugged in the board USB and forgot how to run it. I even forgot which button I needed to press on the front panel to get Multiboot to run. This Hackaday page helped me remember. Glad I made it. Decided to add hints to the PSoC...

The Story So Far-- Explodophone 1.0 Part 2
Log from The Explodophone
Now for the other half. For maximum starting flexibility without taking the cost too high, I opted to go two octaves, using notes found on the white piano keys only, i.e., notes with only letter designations and no sharp or flat symbols. This means I...

fast 68000 block memory move routine comparison
Log from Beckman DU 600 Reverse Engineering
OK, I guess I'll do another log since all I have to do is copy and paste some stuff from a reddit post: https://www.reddit.com/r/m68k/comments/63ov3e/fast_68000_block_memory_move_routine_comparison/simple memory move routines based around MOVE and DBRA...

Speed Signal measuring
Log from JVC to Clio
I measured values on pin A1 of the ISO 10487 connector. Here you are the measured values: Speed (km/h)Pulse duration (μs)30~1300040~1000050~770070~540090~4200100~3750100~3400120~3200 It can be calculated more accurate values with "distance = speed...

Debugging
Log from 8 Bit TTA Interpreter
Debugging Need to get this project working. One problem is that the Nano does not have enough pins. So I have used a Meduino (a Mega2560 Pro Mini). Here is the schematic: Here is the PCB: The ports (P1 & P2) match the TTA8 bus. A problem with the Meduino...

Analog parts
Log from Trinket serial & analog terminal
I've added the possibility to analyze and view A0 and A1 trinket pins on the screen.A0 & A1 can be used as inputs, inputs pullups and/or outputs.IN: input / OU: output / UN: unused3 modes (A0==UN && A1==UN not a possible case):Input mode : (A0 == IN...

Could this work?
Log from EDIDone - Disable DisplayPort Hotplug
I recovered the project file from my drive and made some changes to it. The question is, which wire goes where? I won't know for sure until the dummy plug arrives, but the AUX line is definitely used for this purpose. I even created an EDID data for...

Smooth operator
Log from SMidi - Soft MIDI Pedals
Put the capacitive reading code to use.Started with code from here: https://forum.pjrc.com/threads/31797-Teensy-FSR-based-MIDI-controllerAdded a calibration stage where it detects the base capacitance at startup.Modified it to use this library for smoothing...

Reverse Engineering the BASIC Program
Log from Optronic Laboratories 740A/D Spectrometer
I uploaded a copy of the BASIC program that ran the system. The important part was this, which I annotated what it did. With this Information and finding the interface to the spectrometer is a 48 line DIO board I was able to figure out what lines did...

Micro-coded controller deep-dive
Log from Custom circuit testing using Intel HEX files
In this project, instead of using a standard embedded processor and programming it to execute 3 tasks at hand (parsing HEX character stream, generating HEX character stream, and writing character stream to video RAM driving VGA), I created 3 independent...

20230222b A Tale of Two Translations
Log from ROM Disassembly - AlphaSmart Pro
There are several translation routines found during the file sending stuff that translate one character value into another one. Some we understand, like this one:F4DC sub_F4DC: F4DC 84 7F anda #$7F ; reset high bit F4DE 16 tab F4DF 4F clra F4E0...

Draft Bus Layout
Log from Retro rack and backplane computer
Here is a draft bus layout - 1 +5V +5V 2 +12V +3.3V 3 4 5 6 } 18 pins for other signals 7 8 9 10 11 12 REFSH RESET 13 M1 CLK 14 INT NMI 15 BUSRQ BUSAK 16 HALT WAIT 17 MREQ IORQ 18 RD WR 19 A14 A15 20 A12 A13 21 A10 A11 22 A8 A9 23 A6 A7 24 A4 A5 25 A2...

Understanding how the computer works
Log from Apollo Guidance Computer
Fortunately most of the NASA documents are available. They can be found on-line at https://www.ibiblio.org/apollo/Documents/ The following documents are what I leaned heavily on in gaining an understanding of how this computer...

Backplane
Log from Old school IC tester
I decided that interface between ZIF-socket and host machine will be implemented with help of this antique ISA backplane manufactured in 1984 (I bought it for about $20 last month):I cut out it a little to remove part with pull-up resistors, because...

Board NEDONAND-6
Log from NEDONAND homebrew computer
NEDONAND-6 is 8 multiplexers 2:1 with common control (straight select and inverted select):Board already ordered through OSHPark:Pins description:1.1) GND - ground 1.2) O0 - output of multiplexer 0 1.3) O1 - output of multiplexer 1 1.4) O2 - output of...

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