580 Results for "%E2%86%98 %EC%B5%9C%EC%A0%80%EA%B0%80 %C3%921%C3%92%E3%80%88%E2%91%BB%E2%91%B789%E3%80%8983%C3%92%E2%91%A5 %E2%86%97 %EA%B0%95%EB%82%A8%EC%93%B0%EB%A6%AC%EC%95%84%EC%9B%8C%E3%89%B5 %EA%B0%95%EB%82%A8%EC%93%B0%EB%A6%AC%EC%95%84%EC%9B%8Crest%EA%B0%95%EB%82%A8%EC%93%B0%EB%A6%AC%EC%95%84%EC%9B%8C%E3%83%AB%EC%93%B0%EB%A6%AC%EC%95%84%EC%9B%8C%EA%B0%80%EA%B2%A9obs %EA%B0%95%EB%82%A8%EC%88%A0%EC%A7%91%EC%A0%95%EB%B3%B4%E3%85%88%EC%93%B0%EB%A6%AC%EC%95%84%EC%9B%8C%EA%B0%80%EA%B2%A9%C2%A4%EA%B0%95%EB%82%A8%EC%93%B0%EB%A6%AC%EC%95%84%EC%9B%8C%EF%BC%A9%E2%94%80%EC%93%B0%EB%A6%AC%EC%95%84%EC%9B%8C%EA%B0%80%EA%B2%A9minute"

20230214a -- Memory, cont.
Log from ROM Disassembly - AlphaSmart Pro
Operating under the current assumption that RAM is 32 KiB banked at address 0000-7fff, with the first 256 bytes masked off by special function registers and internal SRAM, some other code sections of interest were found. E.g.:ED00 loc_ED00: ED00...

Top 100 Authors by Views
Log from Statistics for 2015 Hackaday Prize Entries
# Author Followers Skulls Project Comments View Count 1 movax 617 198 5 160 88600 2 MW Motors 284 124 2 112 48660 3 The Big One 498 170 3 74 36100 4 Tyler Spadgenske 245 83 2 15 35300 5 IngGaro 333 88 1 21 31700 6 Debasish Dutta 301 136 3 77 28406 7...

OPS ENUMERATED - Draft
Log from TIS-100 (Geiger)
This represents a complete OPCODE list with 14 Constants (int values) available and 10 Labels (byte values) available for creating subroutines. Constants were favored over Labels, but this is up for evaluation. NOP and HCF were both added to the official...

Control Board FPGA Pinout
Log from BARCO NX-4 GROUP REVERSING ADVENTURE
I might be missing a few connections yet which I'll correct as I come across them, but here is the pinout of the XC3S250E FPGA on the control board. Note that the SRAM and the Flash share an interface bus. Also note that the JTAG interface...

Delta coding and some stats
Log from PEAC Pisano with End-Around Carry algorithm
With the new harvest, I estimate that the perfect and maximal orbits under m=1M is around 100K. This starts to make quite a large .h file to include in the sieve generator. Not that it's such a concern but scalability, you know.... And embedding such...

20230225a - Displaying the Current File
Log from ROM Disassembly - AlphaSmart Pro
sub_F374 has caught my interest because it seems to be painting the LCD with the currently selected file's contents according to several state variables that I have not fully reverse-engineered.The routine begins like this:F374 sub_F374: F374 BD F6 18...

Top 100 Authors by Comments
Log from Statistics for 2015 Hackaday Prize Entries
# Author Followers Skulls Project Comments View Count 1 movax 617 198 5 160 88600 2 MW Motors 284 124 2 112 48660 3 Debasish Dutta 301 136 3 77 28406 4 The Big One 498 170 3 74 36100 5 Blecky 160 67 2 64 19173 6 antti.lukats 212 111 5 54 15462 7 Chali...

20230216b -- "Files"
Log from ROM Disassembly - AlphaSmart Pro
The gist of this unit is that you type text into a discrete 'file' and then you can edit and later transfer to a separate computer via the keyboard emulation. While whizzing through the code doing other things, various strings caught my eye, such...

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...

20230218a -- 0x8000 double duty bit 2
Log from ROM Disassembly - AlphaSmart Pro
One thing unresolved bit of the LCD is the R/~W line. I had largely assumed that the display was write only in this product, but I was quite wrong as reading is needed at least to poll the 'busy' bit in the status register. I had found the...

20230223a - Special Keys and File Ops
Log from ROM Disassembly - AlphaSmart Pro
While revisiting key handler handleKeyScanCode_EE37 and back annotating scan codes into the code, I wind up with this:EE37 handleKeyScanCode_EE37: EE37 13 63 01 04 brclr bCloverKeyDown_63 1 noclover_EE3F ; true if 'clover key down' EE3B 12 61 01 C9 brset...

Top 100 Authors by Projects
Log from Statistics for 2015 Hackaday Prize Entries
# Author Followers Skulls Project Comments View Count 1 Chris Hamilton 412 62 40 25 15031 2 RoGeorge 148 56 9 49 7500 3 himixlt 31 8 8 0 792 4 Eric Cantrell 88 17 7 13 3801 5 Clovis Fritzen 186 65 6 23 12576 6 lee 0 0 6 0 258 7 Steve Schuler 36 20 6...

Top 100 Projects by Followers
Log from Statistics for 2015 Hackaday Prize Entries
Place View Count Followers Comments Skulls Project Author 1 32400 415 56 148 Bench Power Supply The Big One 2 19900 370 38 142 3D Printable Robot Arm Andreas Hoelldorfer 3 31700 333 21 88 Arduino anti-theft alarm shield IngGaro 4 48300 273 112 120 Luka...

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...

New and Improved Version
Log from Fitting a Quadratic Bezier Curve to Point Data
Code RebuildI rebuilt the code for a different staing point. Instead of: B(t)=(1-t)^2*B0+2*t*(1-t)*B1+t^2*B2I refacted the equation to: B(t)=(B0-2*B1+B2)*t^2+2*(B1-B0)*t+B0The error squared for each "t" is: e^2=((Bx0-2*Bx1+Bx2)*t^2+2*(Bx1-Bx0)*t+Bx0-Xi)^2 ...

|<
<
1
2
3
4
5
>
>|