[TUHS] Re: A re-analysis of some DECtapes from dmr

On 7/12/24 08:58, Warren Toomey via TUHS wrote: Here is a follow-up e-mail from Yufeng, I just needed to ensure the colours got preserved :-) Cheers, Warren ---- From Yufeng Gao ---- If you're going to share my email, please consider adding the following information about the s1 and s2 files being from the same version of UNIX: "The maki.s source and a.out executable found in /usr/sys is the exact same maki program used to create the INIT tape, judging by the unzeroed/leftover bytes at the end of vcboot." And the row highlighted in green from the following table to the one from my last email:                | UNIX V1  | s1    | UNIX V2 ----------------------+----------+-------+--------- Warm boot             | [1]73700 | ???   | ??? Cold boot             | 1        | 1     | 1 Unassigned 3K prog    | 2        | 2     | Dump core & halt      | 10       | 10    | 10 Boot from RK          |          | 20    | 20 Dump core & warm boot |          | 40    | 40 Boot from paper tape  | 0        | 0     | 0 Load DEC loaders      | 57500    | 57500 | 77500 ----------------------+----------+-------+--------- *BOS load address      | 54000    | 54000 | 154000* UNIX load address     | 400      | 400   | 600 ----------------------+----------+-------+--------- Sorry if I sound like I'm asking for too much, the history is quite important so I want everything to be in the best possible state :). Sincerely, Yufeng Gao