SubtractionI have had a bit of a problem getting my head around subtraction and the borrow/carry flag. With some CPUs (such as the 6502) the carry flag is set and when underflow occurs then the carry flag is cleared. This works of course but makes JNC...
1440x1440px resolution at 125% scalingWhat the screen would look like on Tetent (but sharper). This already makes me think back to my Windows Vista on PSP days, but I'm mainly imagining the future present of quietly chilling in bed while trimming down...
Had to dig into the FPGA code for the SD card. Using Neal Crook's documentation of Grant Searle's version (longer pedigree on the page). The status register values are: // SD_Status bit values from Neal Crook's documentation of Grant's SD card // b7...