Soft-Patching C64 ROMs for Benchmark BASIC: 6510 Assembly Code Walkthrough

In today’s episode of 8-Bit Show And Tell, the host delves into the Commodore 64 6510 assembly language source of the Benchmark BASIC utility. Even for those not particularly interested in the benchmarking features, the episode covers a broad range of development techniques. These include utilizing the Turbo Macro Pro assembler, soft-patching the C64 ROMs, resolving the “?OUT OF MEMORY” error, exploring valuable resources for understanding the BASIC and KERNAL codebase, demystifying location 1’s memory control, leveraging BASIC’s floating point math routines, and much more.