|
|||
| Products Download Events Support Videos | |||
Discussion Forum
C167CS - can't access XRAM @0xC000
Next Thread | Thread List | Previous Thread Start a Thread | Settings
| Details | Message |
|---|---|
|
Read-Only
Author
Hari Bahra Posted
2-Dec-2004 16:01 GMT Toolset
C166 |
 C167CS - can't access XRAM @0xC000Hari Bahra
Can any one tell me how to access the XRAM at address 0xC000 on the C167CS.I have :- - ticked 'use on-chip xram' - added XRAM class in linker file is as follows :-
CLASSES (ICODE(000000h),
IDATA0(00F600h),
SDATA(00E000h-00E7FFh),
SDATA0(00E000h-00E7FFh),
XRAM(00C000h-00D7FFh),
NCODE(010000h-013FFFh),
.... etc
- used the RENAMECLASSE control at the top of my 'Debug.c' file and allocated some XRAM memory as follows
#pragma RENAMECLASS(SDATA = XRAM)
#pragma NOINIT
static int sdata Temp[20];
The resulting .m66 file looks encouraging ... START STOP LENGTH TYPE RTYP ALIGN TGR GRP COMB CLASS SECTION NAME ===================================================================================== 00C000H 00C027H 000028H DATA REL WORD --- 2 PUBL XRAM ?SD?DEBUGBut it doesn't work - the XRAM is not accessible. Any ideas anyone ?? Regards Hari |
|
Read-Only
Author
Walt Conley Posted
2-Dec-2004 16:58 GMT Toolset
C166 |
RE: C167CS - can't access XRAM @0xC000 Walt Conley
Have you tried this?http://www.keil.com/support/docs/1621.htm |
|
Read-Only
Author
Hari Bahra Posted
3-Dec-2004 15:43 GMT Toolset
C166 |
RE: C167CS - can't access XRAM @0xC000 Hari Bahra
Thanks for responding.Yes I have enabled XPEN in SYSCON register. I don't have any trouble with XRAM at addres 0xE000. I only have trouble accessing the XRAM at 0xC000. |
|
Read-Only
Author
Brad Holeman Posted
6-Dec-2004 17:40 GMT Toolset
C166 |
RE: C167CS - can't access XRAM @0xC000 Brad Holeman
I would double check to make sure that you are indeed enabling all of XRAM. MOV XPERCON,#0C03H ; Enable CAN 1 and CAN 2 Xbus peripherals
; Enable XRAM 2 KByte memory
; Enable XRAM 6 KByte memory
NOP
NOP
MOV SYSCON,#8184H ; Stack size = 512 words
; Internal rom starts at 00'0000
; Segmentation enabled
; Internal rom disabled
; BHE pin enabled
; Clock out pin enabled
; WR is write low, BHE is write high
; Xbus peripherals are enabled
; Xbus accesses are not visible on external bus
; Xbus peripherals not accessable on external bus
Additionally try this in your linker file, SDATA0 (C000H-D7FFH, E000H-E7FFH) |
|
Read-Only
Author
Brad Holeman Posted
6-Dec-2004 19:32 GMT Toolset
C166 |
RE: C167CS - can't access XRAM @0xC000 Brad Holeman
Hari,The above works for sure because we are using with our C167CS. |
Next Thread | Thread List | Previous Thread Start a Thread | Settings
ProductsDevelopment Tools |
Hardware & Collateral |
Downloads |
Support |
Contact |
|
 |
|||
