old ERC32 docs was Re: RTEMS code documentation references

[Joel Sherrill]

Luís Henriques wrote:

>Dear Joel,
>
>While analysing the ERC32 specific code from RTEMS, I found 2 references
>to documentation which I could not trace.  These references are both in
>file c/src/exec/score/cpu/sparc/erc32.h (still on the old RTEMS tree - I
>am using 4.5.0 version):
>  
>

I am offsite today and can't check my bookshelf to give details if I 
even still have the
original manual (I think I still do) but I can almost swear it would 
have come from
whatever ERC32 documentation was available when the port was initially 
done. 
The initial date on the README in the BSP is 1996/12/02 so it would have 
been
the revision from that time frame.

I do recall Jiri sending us multiple sis revisions as they were bring up 
the initial
CPUs at the same time and finding discrepancies.

Maybe Jiri has access to this old documentation today.  I will try to 
give a specific
reference tomorrow.

>73 /*
>74  *  Trap Types for on-chip peripherals
>75  *
>76  *  Source: Table 8 - Interrupt Trap Type and Default Priority Assignments
>77  *
>78  *  NOTE: The priority level for each source corresponds to the least
>79  *        significant nibble of the trap type.
>80  */
>81
>82 #define ERC32_TRAP_TYPE( _source ) SPARC_ASYNCHRONOUS_TRAP((_source) + 0x10)
>
>[ . . . ]
>
>90 /*
>91  *  Structure for ERC32 memory mapped registers.
>92  *
>93  *  Source: Section 3.25.2 - Register Address Map
>94  *
>95  *  NOTE:  There is only one of these structures per CPU, its base address
>96  *         is 0x01f80000, and the variable MEC is placed there by the
>97  *         linkcmds file.
>98  */
>
>Of course, these references refer to ERC32 documentation.  Could you
>please provide me with the exact documents reference (name, version,
>date, ...)?
>
>Thanks a lot.
>
>--
>Luís Henriques
>
>  
>