Re: Commodore 15 Second disk format routine disassembled

On 16/4/26 16:12, Jesus Cea wrote:
> On 11/4/26 3:16, Jesus Cea wrote:
>> You could be interested in this:
>>
>> https://x.com/commodoreihs/status/2040555413326672219

> 
> Now a Youtube video:
> 
> Technical Deep Dive: 15 second format routine for the Commodore 64 and 1541
> https://www.youtube.com/watch?v=74EKB7gdDv4


When skipping the "erasing" of a track to avoid a rotation but risking 
to leave behind some sync/sector data, a trivial approach would be to 
erase only 10% of the track and then write the blank sectors knowing 
that when you finish you are overwriting the small 10% you actually 
erased. No time wasted (10%) and you are sure you are not leaving 
potentially harmful barbage behind.

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