A circuit that helps debug a ROM chip by simulating the ROM with RAM. The RAM circuit plugs into the ROM socket. Since RAM can be written over, whereas ROM cannot, programming changes can be made easily.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- The Apple II is baaaaccckk (via emulator)
- In the Friday nostalgia department, TechRepublic's John Sheesley has unearthed an emulator for the Apple II. All you need is a browser and you're off to memory lane. Sheesley writes: Unlike the TRS-80 Model I Basic emulator page, the Virtual Apple site doesn't use a Java...
- Blog posts 2008-10-10
- News to know: Apple's $800 laptop; MS and Mac Patch Days; Vista Home for business
- Here are today's notable headlines. You can get News To Know via email alert and RSS daily: Ryan Naraine: Mac OS X Patch Day: 40 security flaws fixed MS Patch Tuesday heads-up: 11 bulletins, 4 critical Ed Bott: Look who's buying...
- Blog posts 2008-10-10
- Churchill Club podcast: Irrational decisions and the rational people who make them
- Renowned organizational thinker Ori Brafman and his brother, psychologist Rom Brafman, say that anyone--under the right set of circumstances--is capable of irrational action. But irrational behavior is not random. In conversation with Guy Kawasaki--one of the Club's most popular moderators--the authors of, Sway: The Irresistible Pull of...
- Blog posts 2008-10-09
- syngo fastView (exe)
- syngo fastView is a standalone viewer for DICOM images provided on DICOM exchange media. It can be used on any Windows PC. Its operating concept is based on the easy-to-use syngo philosophy; Learn one - know all. syngo fastView can be used to view [IN] Dicom images on / from...
- Software downloads 2008-10-09
- Locker Pro (rar)
- Main program functions: limitation of access to any folders including those of the system. Blocking discs and disc sections. Hiding discs and disc sections (including CD/DVD-ROM drives). File protection by encryption. Powerful search engine. Files are encrypted by the Rigndael algorithm with a 256-bit key. The program has good encryption...
- Software downloads 2008-10-07
- The cloud finally comes to education
- Cloud computing is one of those great buzzwords in IT that, so far, has meant very little to the average Ed Tech customer. We all have a pretty good idea what it means: lots of computers somewhere (we don't actually care where) doing lots of processing to deliver services...
- Blog posts 2008-10-06
- Slimming down the bloated iTunes 8 installer
- Slimming down the bloated iTunes 8 installerPerformance?Let alone the installer size, does anyone else out there have kind of mediocre performance with iTunes in Windows Vista? I've had a number of times where it just seems to come up black, or respond slowly, or syncing just slows my PC to...
- Discussion threads 2008-10-03
- HxD Hex Editor (zip)
- HxD Hex Editor provides tools to inspect and edit files, main memory, disks/disk images and their structure, using a simple and modern interface. You can employ it to analyze big log files, patch ROM files for emulators, repair disk structures, validate data or search for game cheats. Features of HxD...
- Software downloads 2008-10-03
- MobaLiveCD (exe)
- MobaLiveCD is a freeware that will run your Linux LiveCD on Windows thanks to the excellent emulator called "Qemu". MobaLiveCD allows you to test your LiveCD with a single click: after downloading the ISO image file of your favorite LiveCD, you just have to start it in MobaLiveCD and here...
- Software downloads 2008-10-02
- HP's first 13.3-inch Pavilion vs. the competition
- HP is shipping its first laptop with a 13.3-inch widescreen display. The HP Pavilion dv3500t series is already available on HP's site starting at $1,000, and a slightly higher-end configuration, the dv3520nr, is available for pre-order at Best Buy for $1,200. Other sites have reported that this model will be...
- Blog posts 2008-10-01
- Can Google out-cool Apple?
- Can Google out-cool Apple? No, but the Mountain View search giant might be able to out-geek the Cupertino center of cool. Today T-Mobile announced the first cellphone that will run Google's Android OS. Android-based cellphones are considered by many to be the first real competitor to Apple's...
- Blog posts 2008-09-23
- First Google phone announced by T-Mobile (updated 2x)
- T-Mobile today announced the first mobile phone to run the Google Android operating system, which is largely considered to be the first real competitor to the iPhone. The T-Mobile G1 (a re-badged HTC Dream) will launch on 22 October 2008: Hardware features: ...
- Blog posts 2008-09-23
- Ready to buy albums on a memory card? I didn't think so
- Ready to buy albums on a memory card? I didn't think soMaybe they will......come out with something cool like a song station that packs a bunch of SD cards and you can search for songs and add them to your SD card that it dispenses or insert your own, kinda...
- Discussion threads 2008-09-22
- Logitech Z-5
- A couple of years ago Logitech brought out the Z-10s, an interesting set of PC speakers that featured USB connectivity and a digital readout on the front of one of the speakers. They looked good, sounded decent, and were cutting edge in their nod to visually incorporating digital music playback--though...
- Product reviews 2008-09-17
- WAP Proof 2008 Professional (exe)
- WAP Proof is a professional mobile browser emulator supporting WML, XHTML MP, HTML, and cHTML documents. Several mobile devices are emulated. The HTTP request entity is similar to that of a real device, so the mobile Web site may be tested for compatibility with various user agents. WAP Proof works...
- Software downloads 2008-09-17
- The "As close to $150 as you can get it" PC
- As usual, my mailbox is brimming with great comments and questions from Hardware 2.0 readers. Here's one that caught my eye: I notice that you talk about building PCs regularly. If you wanted to build a PC but spend as close to $150 as possible, what components would you...
- Blog posts 2008-09-16
- Call off the dogs--authentication solution already in enterprise-class PCs
- Call off the dogs--authentication solution already in enterprise-class PCsKinda off topic but.....Why does everyone assume that RFID + Humans = Implant? I would prefer it in my cell phone or watch.TPM is a step in the WRONG direction...- PKI is a step in the right direction; tying it inexorably to...
- Discussion threads 2008-09-15
- (The $2,000 build-it-yourself gaming/video editing/photo editing PC)
- (The $2,000 build-it-yourself gaming/video editing/photo editing PC)$2000 build-it-yourself PCGreat article would do it if I didn't already have a pretty good PC. How about a build-it-yourself gaming laptop?RE: (The $2,000 build-it-yourself gaming/video editing/photo editing PC)I have a similar system with only 4Gb of cheaper ram , 2 Tb...
- Discussion threads 2008-09-12
- The $2,000 build-it-yourself gaming/video editing/photo editing PC
- The $2,000 build-it-yourself gaming/video editing/photo editing PCWhy such an expensive processor?Surely you can cut a couple of hundred dollars off the price and not lose too much performance by getting a lower spec processor.That way you could keep both hard drives (great for keeping the data separate from the...
- Discussion threads 2008-09-12
- Daemon Tools Pro Basic (exe)
- DAEMON Tools Pro Basic is CD & DVD emulation software which allows users to make CD/DVD disc images, create a virtual CD / DVD drives and play CDs & DVDs without the need for the physical disc. It supports more CD / DVD image types than any other CD emulator....
- Software downloads 2008-09-12
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