jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
set _TARGETNAME $_CHIPNAME.cpu
-target create $_TARGETNAME arm7tdmi -chain-position $_TARGETNAME -variant arm7tdmi-s_r4
+target create $_TARGETNAME arm7tdmi -chain-position $_TARGETNAME
$_TARGETNAME configure -work-area-phys 0x40000000 -work-area-size 0x4000 -work-area-backup 0