I also wanted to sniff the communication between the micro controller and radio IC, but couldn't get the case of the remote control open. At the next opportunity I brought the Mi-Light Wi-Fi controller with me and got that open more or less easily:Inside...
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...
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...
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...
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...
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...
The unusual geometry of plotbot means that one has to find a way to map the Cartesian coordinates of what shall be drawn to the coordinates of the steppers in a way that the tip of the triangle that is formed by the arms will follow the Cartesian coordinates...
I've released a new SD image that adds in the drive F: of the CP/M-86 Disk Set a CP/M-80 emulator under CP/M-86 using the V20 8080 mode (VCPM15.CMD). In this way it is also possible run Catchum or send/receive a file with XMODEM: For more info see the...
Thanks to Stephen Hunt, the author of the VCPM15 utlity, it is now possible to automatically execute either CP/M-86 or CP/M-80 programs without the need of the VCPM emulator program that he wrote back in the 80s. See how in the new paragraph: "CP/M-86...