A fast and easily customised operating system
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Defect Lists
Programmer's Reference Manuals
» Part 15 – SWI Calls
» FileCore
» FileCore_FloppyStructure
» Defect Lists
Defect Lists
For ‘Small’ discs1
A list of defects in byte addresses, giving the start address of each defective sector and terminated by &20000000.
For ‘Large’ discs1
A list of defects in byte addresses, giving the start address of each defective sector and terminated by &20000000.
Followed by a second list with the defect addresses in sectors, terminated by &40000000.
1 The size of the disc is specified by the value at offset 20 – 23 in the disc descriptor block.