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DesTest MAX - Switch "Kit Version"
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DesTest MAX-Switch DiY "Kit Version"
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!
👉 Support
- https://factorofmatt.com/destest-max-switch
- https://factorofmatt.com/destest
- https://factorofmatt.com/dt-max-switch-downloads
-Youtube Reviews-
More Fun Making It
https://www.youtube.com/watch?v=DDXIHs8rm-s
Adrian's Digital Basement
https://www.youtube.com/watch?v=wfv_J3iYPNI
https://www.youtube.com/watch?v=M64hCqBpSDE&t=986s
CrB Retro Archive : www.tinyurl.com/Cryptoburners
👉 You will find frequent updates of new releases here: https://www.tinyurl.com/crb-soft
søkeord Commodore 64 64c C2N 1541 MK II iComp breadbin DesTest MAX-Switch MOS VIC-II CPU CIA SID J-CIA64 J-PLA CSG J-CPU64 cartridge diagnostic Assembled DIY Kit Version
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Sist endret: 20.11.2025 kl. 23:14 ・ FINN-kode: 436078754
