Question

I am making a DOS picture viewer. For the next part I must set it so that it finds the value of each pixel then sends it to a file I’m using AH=40 INT 21 to send it to the file, but the data must be in the program but I’m using AH=0D INT 10 to find the color of the pixel and it saves it in a register. I need to make a byte in the file the value of a register. I probally need to do something like DB “reister value”. In other words I need to make address 0250 lets say be the value of AL, or send the register value to RAM. Im running in ‘AH=0 AL=13 INT 10’ 64000 pixels 256 colors

Answer 1

No need to process anything the hb800 is the location for text based mode 0 – screen 0. it is in binary so you would just reference it to load where you need it.