DesTEST Switch Select Commodore 64 64c c128 Multi-Tool Diagnostic Cartridge

Commodore 64 64c c128 c128D Multi-Tool Diagnostic Cartridge  DesTEST Switch - Select   Features New Case Design - Improved Strength and Durability Gold Plated ENIG PCB Reset Button w/LED's Max Mode Operation and Full 64k Mode Operation   March-B  Ram Testing Algorithm No Dependence on the ROM's, CIA's or SID ROM checksum verification (if installed) CIA TOD consistency verification Also included with....... FOM 26 Sparkle Dead-Test and Sparkle Diagnostic DesTEST Mini DesTEST -KSP SID TESTER AND SID c64 Burn In Final Rev 3.0 (which give you a video monitor test screen) SIDTESTER is written by Andrew Challis available publicly at hackjunk.com/2017/11/07/commodore-64-sid-tester This program allows you to test Triangle, Sawtooth, Pulse or Noise from your SID Chip Made into cartridge, under GPL-3.0 license and available at Github.com/asig/c64-sid-tester-cartridge This is an exact distribution of the work available to the public at GitHub that I have included with this distribution.   Burn In Final Rev 3.0 is also available publicly at blog.worldofjani.com/?p=154 and it is in its exact form.  This program also gives a battery of tests, I've included this because of its addition SID test and Video Monitor Color Test Patterns. Making the cartridge a Multi-Tool able to perform, lots of various functions for you. SID TESTER and BURN In Final Rev. 3.0 are included at no charge and are not part of the price on the DesTest Switch-Select.  They are included as a Free Distribution with Purchase of the Switch-Select. (ToTsRETRO) DesTEST Mini - Is a bare minimal test to let you know if your computer is able to utilize the Max-Switch Test Cartridge.  When Operational, the screen will flash white and black, with a corresponding sound.  I've found that using the reset button can help with getting Sound, Although a SID Chip is not necessary to Utilize the Cartridge.  It will also activate the Cassette Motor if you have one connected at identical intervals. Sparkle Dead Test and Diagnostics Run the same as the Original Dead-Test and Diagnostics, with three exceptions.  One on the Deadtest you now will see a "Ram Screen" with Sparkle while the test is operational, no Black screen waiting to know if its working, you will know its working from the start.  and Two the Sparkle will persists through out the test as a sign that the test is functioning and not frozen.  This happens in the Dead Test as well as the Diagnostic Test.  And Finally, when the Dead Test is Done, it will "SWITCH" to run the Diagnostics Test.  From factorofmatt...... DesTest MAX-Switch The MAX-mode of the C64 expansion-port is truly a marvel since it allows the program on the cartridge to run right from the get-go bypassing the kernal and its assumptions about working memory.  This convenience, however, comes at a cost:  All but the bottom 4K of memory plus the kernal, BASIC and character ROMs are not available. That's why DesTestMAX only tests 4K!  That's all it can test. The DesTest MAX-Switch (or just the 'Switch) solution aims to fix this limitation! The custom DesTest MAX-Switch cartridge adds the capability to switch (hence the name) between the MAX-mode and regular cartridge-mode under program control.  The new DesTest Software allows the following features:   Full 64K memory test using the March-B algorithm. No dependence on the ROMs, CIAs or SID: they can be removed. ROM checksum verification (if installed). CIA TOD consistency verification.   The DesTest MAX-Switch hardware includes provisions for the following:   Power LED.  Most of the time when diagnosing or repairing a C64, the keyboard is removed along with the Power LED.  The DesTest MAX-Switch cartridge includes a simple power LED to avoid mistakes like removing or inserting ICs with the power on. Reset Switch and LED.  A faulty reset-circuit in a C64 can prevent it starting-up properly.  A reset-switch can temporarily bypass a faulty reset-circuit and the LED gives a visual indication if something is wrong! Dimensions: 73.1 x 69.5 x 21.3 mm Weight: ~67grams Color:  Grey/Black Guaranteed tested and working when Shipped to you.    Sold From USA, PHOENIX AZ Any Questions, do not hesitate to ASK.    Check out the Switch in action ....