
Filled with first-hand accounts of ambition, greed, and inspired engineering, this history of the personal computer revolution takes readers inside the cutthroat world of Commodore. Before Apple, IBM, or Dell, Commodore was the first computer manufacturer to market its machines to the public, selling an estimated 22 million Commodore 64s. Those halcyon days were tumultuous, however, owing to the expectations and unsparing tactics of founder Jack Tramiel. Engineers and managers with the company between 1976 and 1994 share their memories of the groundbreaking moments, soaring business highs, and stunning employee turnover that came with being on top in the early days of the microcomputer industry. This updated second edition includes additional interviews and first-hand material from major Commodore figures like marketing guru Kit Spencer, chip designer Bill Mensch, and Commodore co-founder Manfred Kapp.
I also like the Brian Bagnall books (beware: There are two multi-volume editions, the second edition is far larger which is good/bad depending on how interested you are) but they are much more for those already interested in Commodore, though "Commodore: The Amiga Years" on its own is worthwhile for people interested specifically in the Amiga.
Maher's The Future Was Here is much more accessible to people who has want a lighter read and/or don't have a personal relationship to the Amiga and Commodore, though.
This [1] summarizes it. Here [2] is an interview by Computer History Museum of Chuck Peddle. It matches up with the first chapters in Bagnalls book very closely. From about 50 minutes in he talks about his meetings w/Motorola customers that told him the 6800 was too expensive. From about 58m in they talk about basically setting a size metric for the chip to meet a low enough price point. So the starting point was what they could fit in small enough space.
You might also like the Computer History Museum interview w/Bill Mensch [3]
[1] http://www.cpushack.com/2013/08/03/mos-technology-mcs6501-pr...
[1] Beware, the Amazon listings are a confusing mess; the first edition is "The Story of Commodore: A Company on the Edge"; the second edition is a massively expanded three volume set, starting with "Commodore: A Company on the Edge" (ignore what Amazon says; it's not book #2), followed by "Commodore: The Amiga Years" and "Commodore: The Final Years". They're all 500+ pages.
https://www.goodreads.com/series/270019-the-commodore-series