Michael Jørgensen

The following comment is copied from VICE (file vice/src/c64/cart/kcs.c): ``` KCS Power Cartridge - 16kb ROM, 128 bytes RAM It's rather simple: io1: - the second last page of the...

Remember to take into account #2 so we avoid any regression bugs

Possible duplicate of (or at least related to) #32 .

When I try with VICE version 3.8 I also get the black screen when starting the game. @paich64 Can you get this game to work on VICE ?

Just some notes for myself: So far, I'm concentrating on the fastloader, since that seems the easiest to debug. ### Observations This CRT file (and the fastloader) works fine in...

To be specific, the fix I'm contemplating is the following: ``` diff --git a/CORE/vhdl/crt_cacher.vhd b/CORE/vhdl/crt_cacher.vhd index f02801a..61ab019 100644 --- a/CORE/vhdl/crt_cacher.vhd +++ b/CORE/vhdl/crt_cacher.vhd @@ -145,6 +145,7 @@ begin if rising_edge(clk_i) then...

I'm having the same reservations. I would like to try the fix in a local debug build, in order to test the hypothesis. If this fix works, thus confirming the...

Ok, the one-line fix does not fully solve the issue. With the change, the fast-loader does start up, but no READY prompt appears, and the core resets after a few...

Problem has been reproduced in simulation! With the above-mentioned fix (implemented in commit ad8ab5d8) the CPU encounters an unintended BRK instruction at $DF11: ``` CPU: DF0C : A9 LDA :...

Apparently, in VICE, values written to $9F11 is also written to $DF11, at least when bit 5 of $DE00 is set. This seems to be confirmed by the schematic at...