HOLTEK MCU are very near from small PIC: ultra-low cost with no RAM addressing problem (banking), neither ROM page. Virtual Micro Design just release a new set of libraries for HOLTEK family: HT48R70, HT48R50, HT48R30 and HT48R10 that allow total simulation under UMPS (http://www.vmdesign.com) Regards, Philippe. +--------------------------------------------------------+ | Virtual Micro Design | | Technopole Izarbel, | | 64210 BIDART | | FRANCE | | | | Phone: ++33 559.438.458 Fax: ++33 559.438.401 | | | | E-Mail: info@vmdesign.com | | URL: http://www.vmdesign.com | +--------------------------------------------------------+