The hardest part was that I didn't have the hardware documentation (6502, POKEY, ANTIC, GTIA...) and my mom wouldn't buy me the assembler cartridge. I got delay

The hardest part was that I didn't have the hardware documentation (6502, POKEY, ANTIC, GTIA...) and my mom wouldn't buy me the assembler cartridge. I got delayed 6 to 8 years because of this. I finally resolved the problem via Peter Norton's assembly book and MS-DOS's DEBUG.COM when I got a hand-me-down with a V20 CPU. The second hardest part was that edlin is a dreadful editor. The programming comes naturally if you have documentation and tools.