Talk:MOS Technology 6502/Archives/2015
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Error about nature of MDT-650
However, this left MOS with the problem of getting developers to try their processor, so Peddle designed the MDT-650 (for "microcomputer development terminal") single-board computer. Another group inside the company designed the KIM-1, which was sold semi-complete and could be turned into a usable system with the addition of a 3rd party computer terminal and compact cassette drive.
The MDT-650 was NOT a single board computer. The following article [1] appeared in the April 1976 issue of Microcomputer Digest (Vol 2 Num 10).
- MICROCOMPUTER DEVELOPMENT TERMINAL
- MOS Technology has announced the MDT650 Microcomputer Development Terminal for modeling new 650X designs. The MDT650 terminal is used to evaluate and debug the user's programs and system hardware. The unit can be configured to a wide range of designapplications through user-system emulation.
- The MDT650 incorporates a completely separate processor and bus structure for application emulations, thus eliminating emulator executive overhead time during real time execution.
- Interaction with the MDT650 is normally with the integral keyboard/display. However, a TTY or other terminal device can be used. The expandable port configurations are TTL compatible.
- The standard MDT650 system allows the user to assign up to 65K of memory as desired (with independent address and data bases). The ROM resident system monitor includes all necessary functions for program loading, debugging, and execution. A resident assembler may be used to assemble machine instructions. Interpretation of machine codes is linked to original op-codes, labels and mnemonics. A resident editor provides source language editing capability.
- The MDT650's bare system price of $3950 includes dual microprocessor module, RAM memory module, program trace and address trap board, I/O b~ard, resident monitor ROM module; chassis with 14 board slots, power supplies, cabinet, keyboard and display, system monitor, assembler text editor, user's manual, MCS650 assembly language programming manual, and MCS650 assembly language reference card.
- Options planned include a PROM programmer available for 82S115, 2708 or 1702A, wirewrap board for custom designs, extender board module, address and data bus display board, 4K RAM board, 8K PROM board, 2K RAM/4K PROM board, I/O board, user RAM write protect option, high speed ports for printer, card readers, floppy disc interface, In-Circuit Emuiator, and system s6ftware source listings.
- MOS Technology reports availability of the base system in the second quarter, 1976 with the various hardware options becoming available in the second and third quarters, 1976.
Also, the MDT-650 was NOT designed by Peddle, as stated on Page 25 of "Commodore: A Company on the Edge", but by an outside firm by the name of Monolithic Systems.[2] — Preceding unsigned comment added by 72.190.74.67 (talk) 14:29, 15 July 2012 (UTC)
Apple II accelerators
Every computer and microprocessor ever made was soon too slow for users. The 6502 was used in more applications than home computers and Apple was only one provider. I am unsure that the Apple II accelerators article deserves such a prominent link in the 6502 article. -- SWTPC6800 (talk) 17:35, 23 March 2015 (UTC)
- Agreed, although some content regarding acceleration should remain in the article. Accelerator boards and drop-in chips were also fairly common for Commodore 8-bit systems. I'd suggest that we strike the Apple II specific text and "main article" link, while retaining the remaining text (copyedited as needed). // coldacid (talk|contrib) 17:46, 23 March 2015 (UTC)