[Simh] TOPS-20 4.1 BUGHLT

[Cory Smelosky]

On Mon, 11 May 2015, Timothe Litt wrote:

> Glad you succeeded.

Thanks,

Seems TSU02 finally fixed a SETSPD bug. ;)

>> Sounds like just a corrupted disk.
>>
> That really shouldn't happen, barring a crash of the host hardware, or
> an unclean shutdown of the OS.  Don't do that.

I tried to ^ECEASE every time...but I must've missed one or hit a memory 
error.

>>
>>
> Depends on data.  Try it and see.
> Since 36 bits are stored in 64, there's an automatic inflation of 1.8x
> of zeros.
>

Ahh, right.

> After that, depends on your data & the compression.  Since most text files
> aren't byte-aligned (7-bit bytes), you should use/set your compressor to
> allow fairly wide codes (if it's variable width).
>

Mmm.

>
> But it really doesn't matter.  The capacity of an RP06 is ~177MB;
> notebook PCs
> these days come with 500GB-2TB drives.  So you can fit 2,800 RP06s on the
> 'small' drive; 11,000 on the large ones.  OK, divide by 1.8 for 1,500
> /6,300.
> Desktops, network storage tend to be bigger.  So a few backup copies of
> your
> RP06s really isn't a big deal, even uncompressed.
>

Yeah... ;)

> YMWV.
>
>
>

-- 
Cory Smelosky
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