Could it be one of those legendary Schnedler accelerators which I think from an old advertisement runs at about 4 megahertz? Craig LeVay On Fri, 9 Mar 2001, Professor Dredd wrote: > I recently picked up an odd card for the C-64 which > appears to be an accelerator. I need help identifying > the card and getting documentation. This is NOT a > SuperCPU! > > The board is blue colored and bears a single > identifying mark "4 Mhz". It contains the following > components: > 65816 processor W65C816P-5 > EPROM GI 27C256-15 > a DIP-block with 8 toggle switches > a single red LED > 1 250K Ohm variable resistor > 1 1K Ohm variable resistor > 1 3 pin connector > 1 2 pin connector > 1 pushbutton momentary-contact switch connected to > (RESET) > > The 'solder' side of the board contains a one > component, a VARTA SafeTronic 2.4v 100mA black-box. I > think this is either a real-time clock or possibly a > battery unit for saving configuration settings. > > With the card plugged in, the computer powers up with > blue border and blue screen and the message > "TURBO-PROCESS 38911 BASIC BYTES FREE" > > The card contains its own KERNAL which defeats the > Commodore-RUN/STOP shortcut for LOAD":*",8 on my > SX-64. > > I'm afraid to mess with the variable resistors since > tuning a resistor to zero Ohms may damage other > componenets if they depend on it for a load. I have > been experimenting with the dip switches and here's > what I've found: > > Switch #1 - Enable/Disable, seems to totally kill the > card when set to zero although the LED remains lit. > > Switch #2 - No apparent effect. > > Switch #3 - No effect. > > Switch #4 - When enabled the computer resets to a > flashing border, but no BASIC prompt or screen display > of any kind. > > Switch #6 - No effect. > > Switches #7 and #8 - Enabling either of these switches > prevents BASIC from starting on reset. No menu or > other screen display. > > And Switch #5 (OH YEAH!) - With #5 enabled the > computer powers up with blue border, black background > and yellow cursor. The sign-on message at the top of > the screen is green and reads: > "**COMMODORE 64 & TURBOPROCESS**" > "38911 BASIC BYTES FREE SYSTEM 3 (UP)" > > In this mode there is a "@" DOS wedge present. > LOADing a basic program yeilds the response: > "SEARCHING" > "LOADING TO AREA: 0801-0869" > > Some programs work with the card, others not, but I > don't notice any acceleration. > > Can anyone help me identify this card and learn more > about it, please? > > ===== > Get a FREE 6Mb webmail box from go6502! - http://www.geocities.com/profdredd > > As low as 2.99% Intro APR from NextCard! - http://www.nextcard.com/index6.html?ref=aff0074521 > > PayPal is the FAST FREE and SECURE way to send money! - https://secure.paypal.x.com/refer/pal=profdredd%40yahoo.com > > __________________________________________________ > Do You Yahoo!? > Get email at your own domain with Yahoo! Mail. > http://personal.mail.yahoo.com/ > - > This message was sent through the cbm-hackers mailing list. > To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tml.hut.fi. > - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tml.hut.fi.
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