This is a complete 8086 assembler and loader which can make 32-bit code for the 386+ processors. In the past it was used to compile the 16-bit bootsector and setup binaries for the kernel, but modern (2.4.x or newer) kernels use GNU ld instead. There's a package bin86 already included in Slackware, which is a subset of the programs of dev86. Therefore the bin86 programs are not included in this package.