after installing graphics-3.0.21-tinycore.tcz , the HDMI & CRT monitor (both attached to graphic card) turned off .
AFter killing xserver (ctrl+alt+backspace) & restarting (startx) . I installed driver successfully (see fglrx-install.log).
Supported adapter detected.
Check if system has the tools required for installation.
Uninstalling any previously installed drivers.
Unloading radeon module...
rmmod: can't unload 'radeon': Resource temporarily unavailable
Unloading drm module...
rmmod: can't unload 'drm': Resource temporarily unavailable
[Message] Kernel Module : Trying to install a precompiled kernel module.
[Message] Kernel Module : Precompiled kernel module version mismatched.
[Message] Kernel Module : Found kernel module build environment, generating kernel module now.
AMD kernel module generator version 2.1
doing Makefile based build for kernel 2.6.x and higher
rm -rf *.c *.h *.o *.ko *.a .??* *.symvers
make -C /lib/modules/3.0.21-tinycore/build SUBDIRS=/lib/modules/fglrx/build_mod/2.6.x modules
make[1]: Entering directory `/usr/local/src/linux-headers-3.0.21-tinycore'
  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/firegl_public.o
  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/kcl_acpi.o
  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/kcl_agp.o
  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/kcl_debug.o
  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/kcl_ioctl.o
  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/kcl_io.o
  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/kcl_pci.o
  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/kcl_str.o
  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/kcl_iommu.o
  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/kcl.o
  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/kcl_wait.o
  LD [M]  /lib/modules/fglrx/build_mod/2.6.x/fglrx.o
  Building modules, stage 2.
  MODPOST 1 modules
  CC      /lib/modules/fglrx/build_mod/2.6.x/fglrx.mod.o
  LD [M]  /lib/modules/fglrx/build_mod/2.6.x/fglrx.ko
make[1]: Leaving directory `/usr/local/src/linux-headers-3.0.21-tinycore'
build succeeded with return value 0
duplicating results into driver repository...
done.
You must change your working directory to /lib/modules/fglrx
and then call ./make_install.sh in order to install the built module.
- recreating module dependency list
- trying a sample load of the kernel modules
done.
Following appears as /etc/X11/xorg.conf
Section "ServerLayout"
	Identifier     "aticonfig Layout"
	Screen      0  "aticonfig-Screen[0]-0" 0 0
EndSection
Section "Module"
EndSection
Section "Monitor"
	Identifier   "aticonfig-Monitor[0]-0"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
EndSection
Section "Device"
	Identifier  "aticonfig-Device[0]-0"
	Driver      "fglrx"
	BusID       "PCI:1:0:0"
EndSection
Section "Screen"
	Identifier "aticonfig-Screen[0]-0"
	Device     "aticonfig-Device[0]-0"
	Monitor    "aticonfig-Monitor[0]-0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection
Now
$sudo modprobe fglrx
$ lsmod
Module                  Size  Used by    Tainted: P  
fglrx                4337664  0 
radeon                516096  1 
drm_kms_helper         20480  1 radeon
ttm                    36864  1 radeon
drm                   106496  3 radeon,drm_kms_helper,ttm
agpgart                24576  3 fglrx,ttm,drm
backlight              12288  1 radeon
i2c_algo_bit           12288  1 radeon
i2c_piix4              12288  0 
powernow_k8            16384  1 
cpufreq_stats          12288  0 
mperf                  12288  1 powernow_k8
cpufreq_userspace      12288  0 
cpufreq_powersave      12288  0 
cpufreq_conservative    12288  0 
oss_usb                90112  0 
oss_hdaudio           143360  0 
osscore               503808  2 oss_usb,oss_hdaudio
squashfs               24576 44 
scsi_wait_scan         12288  0 
zcache                 12288  0 
zram                   12288  1 
loop                   16384 88 
ppdev                  12288  0 
parport_pc             24576  0 
atl1c                  28672  0 
parport                24576  2 ppdev,parport_pc
pcspkr                 12288  0 
wmi                    12288  0 
i thought of restarting X server but killing ' /usr/local/bin/Xorg -nolisten tcp' leaves me with a black screen & cursor blinking at top right , hard reboot seems to only work.