; /*------------------------------------------------------------------------- ; ; crtxclear.asm :- C run-time: clear XSEG ; ; This library is free software; you can redistribute it and/or modify it ; under the terms of the GNU Library General Public License as published by the ; Free Software Foundation; either version 2, or (at your option) any ; later version. ; ; This library is distributed in the hope that it will be useful, ; but WITHOUT ANY WARRANTY; without even the implied warranty of ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ; GNU Library General Public License for more details. ; ; You should have received a copy of the GNU Library General Public License ; along with this program; if not, write to the Free Software ; Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ; ; In other words, you are welcome to use, share and improve this program. ; You are forbidden to forbid anyone else to use, share and improve ; what you give them. Help stamp out software-hoarding! ; -------------------------------------------------------------------------*/ .area CSEG (CODE) .area GSINIT0 (CODE) .area GSINIT1 (CODE) .area GSINIT2 (CODE) .area GSINIT3 (CODE) .area GSINIT4 (CODE) .area GSINIT5 (CODE) .area GSINIT (CODE) .area GSFINAL (CODE) .area GSINIT4 (CODE) __mcs51_genXRAMCLEAR:: mov r0,#l_PSEG mov a,r0 orl a,#(l_PSEG >> 8) jz 00006$ mov r1,#s_PSEG mov __XPAGE,#(s_PSEG >> 8) clr a 00005$: movx @r1,a inc r1 djnz r0,00005$ 00006$: mov r0,#l_XSEG mov a,r0 orl a,#(l_XSEG >> 8) jz 00008$ mov r1,#((l_XSEG + 255) >> 8) mov dptr,#s_XSEG clr a 00007$: movx @dptr,a inc dptr djnz r0,00007$ djnz r1,00007$ 00008$: