[sebhc] Floppies, archives, and ROMs

[Steven Parker]

Barry wrote:
>Actually, the discs have 11 holes, 10 equally spaced and one in between 
>(not
>sure it's exactly halfway, it might be).

Yes, the index hole is midway between to sector holes.

Dave wrote (regarding simulating hard-sector pulses with soft-sector 
diskettes):
>  - "Remember" the timing for up to four drives, so that after the first
>    calibration (power on), you can begin inserting hard-sector pulses as 
>soon
>    as you see the index pulse (subject to above guard time of course).

The internal drag of a particular floppy might alter the speed slightly, so 
it might be better to compute the timing from scratch after any insertion.  
Also remember that insertions can occur while the motor is engaged (even if 
rude!).  :-)

Bob Brown wrote:
>I get a request for username/password when I go to this link.

As previously mentioned, login as user "heathkit", password "hdos8bit" (no 
quotes).   Jack - can this be added to the list manager's welcome message 
for new subscribers?

And I found a bit more history of the H8 monitor, here's what I have so far:

  01 Mar 76     PAM/8    J. G. Letwin (444-13)
  25 Aug 79     PAM8GO   JWTittsler (one-button boot) (*)
  31 Dec 79     PAM8AT   JWTittsler (automatic boot) (Part No?)
  04 Mar 80     PAM8GO   JWTittsler (changed default display to PC) (444-60)
  20 Jun 80     RAM8GO   JWTittsler (RAM at zero capability) (*)
  07 Aug 80     XCON-8   G. Chandler (H17/H47 boot) (444-70)
  15 Apr 81     Pam8/RP  S. Parker (Heath Employee's Amateur Repeater) (*)
  23 May 83     Pam-37   S. Parker (A.K.A. Pam-80, HD boot) (444-140)

(*) = never assigned a part number or publicly released

There may still be some omissions or inaccuracies.  For one thing, I still 
haven't found out what a 444-124 is.

Cheers,

- Steven


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