Re: BASIC for the CBM-II/8088

From: smf <>
Date: Wed, 25 Jul 2018 12:54:14 +0100
Message-ID: <>
On 23/07/2018 22:11, Mia Magnusson wrote:
> If super fast seeks would be wanted, even for files covering a whole
> disk, then two bytes for each sector would be needed, or rather (in the
> 1541 case) 10 bits for each sector. That would be 1,2k or 800 bytes
> depending on if two bytes or 10 bits is used. At least for the larger
> drives, especially the 8050/8250 business drives, I think commodore
> could well have installed at least 8k ram in the drives.

My point is that the 1.2k is already on disk, because you lose those two bytes from every sector.

Plus the BAM is on disk & you don't actually need both if the sector links are stored in one place.

As commodore don't even keep the entire BAM in RAM all the time, then it points to them being extremely short of RAM.

 From what engineers have said about commodore, they wouldn't want to fit an extra 2k to the 1541. It's not like it was built for speed.
Received on 2018-07-25 14:00:59

Archive generated by hypermail 2.2.0.