Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!uunet!mcsun!news.funet.fi!funic!nntp.hut.fi!nntp!iisakkil From: iisakkil@vipunen.hut.fi (Mika R Iisakkila) Newsgroups: sci.electronics Subject: Intel's ICE 51 (Re: XTAL won't oscillate at correct frequency) Message-ID: Date: 22 Jun 91 11:16:47 GMT References: <15649@exodus.Eng.Sun.COM> Sender: usenet@nntp.hut.fi (Usenet pseudouser id) Organization: Otaniemi Underground Broadcasting System Lines: 20 In-Reply-To: bender@oobleck.Eng.Sun.COM's message of 22 Jun 91 05:25:46 GMT Nntp-Posting-Host: vipunen.hut.fi bender@oobleck.Eng.Sun.COM (memory fault - core dumped) writes: > I remember doing some code on a "real" INTEL 8051 emulator (ICE-51) running > on a "blue box" (system 3?? ISIS OS, 2 8" disk drives, CREDIT, remember > that!) but I don't seem to remember that INTEL used a bonded-out 8051 in > their emulator, like the AA unit does - anyone familiar with how INTEL's > 8051 ICE is architected? The Intel ICE252-5100 (not the latest model by Intel and probably newer than the one that you've used) has a 68-pin PGA-cased chip in its bonded-out device. I never opened it to see the prints on the chip, but it's definitely not a plain vanilla 8051. The emulator itself is excellent, but the user interface of the PC version sucks big time. I've heard that the latest model is much more convenient to use. As a side remark, why didn't you use the internal clock oscillator in the 8051? Doesn't it work with overtone crystals? I've had a 11.059 MHz (in order to get standard baud rates) crystal in all my projects, and the internal osc has worked just fine.