TRS-80 Assembly Language Programming by William Barden, Jr. is a foundational technical manual that helped early computer enthusiasts unlock the capabilities of the Radio Shack TRS-80. Focused on low-level programming for the Zilog Z80 processor, the book offers step-by-step instruction in writing compact, efficient assembly code—essential knowledge in an era when every byte mattered. Beyond its practical content, this first edition, first printing from 1979 holds strong appeal for collectors and retro computing historians alike, marking a formative moment in the home computer revolution.
 
The paperback is in acceptable condition, showing mild toning to the pages and significant surface and edge wear to the cover. Interior pages are tightly bound and fully legible.