The ASxxxx assemblers are a series of microprocessor assemblers written in the C programming language. This collection contains cross assemblers for the 1802, S2650, SC/MP, MPS430, 6100, 61860, 6500, 6800(6802/6808), 6801(6803/HD6303), 6804, 6805, 68HC(S)08, 6809, 68HC11, 68HC(S)12, 68HC16, 740, 78K/0, 78K/0S, 8008, 8008S, 8048(8041/8022/8021), 8051, 8085(8080), AT89LP, 8X300(8X305), DS8XCXXX, AVR, EZ80, F2MC8L/FX, F8/3870, GameBoy(Z80), H8/3xx, Cypress PSoC(M8C), PIC, Rabbit 2000/3000, ST6, ST7, ST8, Z8, Z80(HD64180), and Z280 series microprocessors. The companion pro- gram ASLINK is a relocating linker supporting all the cross assem- blers.