Re: [Simh] RP vs RM header operations

2019-06-27 Thread Lars Brinkhoff
Rob Doyle wrote: > As a clarification, it looks to me like the sector header data "words" > are always 16-bit, regardless if the disk pack is formatted for 16-bit > data or 18-bit data. That's how I understood it too. > From a hardware point of view, sector header "Word 3" and "Word 4" > have no

Re: [Simh] RP vs RM header operations

2019-06-27 Thread Rob Doyle
On 6/27/2019 11:27 AM, Bob Supnik wrote: As I suspected, RP class drives (except the RP07) have 4 words of header, and RM class drives have 2. This is confirmed by the RSTS/E disk initialization code. RSTS/E can't format an RP07, so I can't verify how those functions ought to work. RSTS/E seems

[Simh] RP vs RM header operations

2019-06-27 Thread Bob Supnik
As I suspected, RP class drives (except the RP07) have 4 words of header, and RM class drives have 2. This is confirmed by the RSTS/E disk initialization code. RSTS/E can't format an RP07, so I can't verify how those functions ought to work. RSTS/E seems to think it has 2 words of header, thoug