Appearance: UsedFunctionality: Partially Working
Description:============As Pictured, a TRS-80 Model 4P. Includes just the pictured items – no other accessories are available. System powers on, spins, and accesses floppy drive – but does not boot – sold as-is.
Warranty and Returns:=====================This product is being sold AS-IS without any warranty. Returns are not accepted. To ensure that this is the right product for your needs, we’re happy to answer any questions.
Shipping:=========- Other shipping methods are available – contact us for details.- Combined shipping is available for most items – contact us for details.- Local pickup is also available at no cost.
About Us:=========The Computer Preservation Group is dedicated to the preservation of historical computers. To help fund ongoing operations, select items are made available. To learn more, please visit our website. Thank you for your from Wikipedia:
The Model 4P (September 1983, Radio Shack catalog number 26-1080) is a self-contained luggable unit. It has all the features of the desktop Model 4 except for the ability to add two outboard floppy disk drives and the interface for cassette tape storage (audio sent to the cassette port in Model III mode goes to the internal speaker). It was sold with the two internal single-sided 180 KB drives. It was later made with the Gate Array technology (catalog number 26-1080A). 80 Micro published an article describing a simple motherboard modification to enable the installation of two external floppy drives.[25]
The 4P's video monitor is 9" compared to the Model 4's 12". The smaller size, and sharper dots, produce better video output. The computer is compatible with popular internal Model 4 peripherals,[26] and has a slot for an internal modem board. The Radio Shack modem uses its own proprietary command set and only supports communications at 300 baud. Teletrends produced a 1200 baud that uses the Hayes command set.
Tandy discontinued the 4P by early 1985, stating that "even though you won't find a more enthusiastic and devoted group of owners than our Model 4P folks, transportables just weren't moving well for any company that also sold a desktop version."[27]
Released April 26, 1983; 43 years agoIntroductory price $1999 (64K, 2 floppy drives, RS-232C), $1699 (64K, 1 floppy drive, no RS-232C)[1]Discontinued Late 1991[2]Operating system TRSDOS 6.2,[3] LS-DOS 6.3[4], TRSDOS 1.3, LDOS 5.3, CP/M 2.2 or 3.0CPU Zilog Z80A @ 4 MHzMemory 64 KB or 128 KB, 1 MB plus with third-party upgradesDisplay Model 4 mode: 24 rows, 80 or 40 columns, Model III mode: 16 rows, 64 or 32 columns, block graphicsGraphics optional 640 by 240 pixels for $249 extraSound beeperBackwardcompatibility TRS-80 Model IIIPredecessor TRS-80 Model IIISuccessor none
