Subject: Re: [stella] [ann] Distance disassembler|
From: Greg Miller <gmiller@xxxxxxxxxxxxxxxxx>
Date: Tue, 23 Jan 2001 14:15:32 -0600
I don't really like how the output is formated. I think most of us put the labels at collumn 1, the instructions at collumn 17 and the operands at collumn 25. Maybe your disassembler could format it's output like this too? This would also allow you to put in the
addressing mode overrides for the instructions. If you do:
NUSIZ0 equ $0004 sta NUSIZ0
then DASM will generate a zeropage access, because of the leading zeroes. But sometimes you might want to generate an absolute access, because of the different timing. In DASM you can enforce this by doing
I think your disassembler should generate those overrides automatically, because otherwise some games wouldn't assmeble to the correct binary with DASM.
Also it would be good if one could define different labels for read and write accesses. On the VCS for example writing to address $04 will set the NUSIZ register for player 0, but reading from that same address will get you the status of one of the collision registers. Maybe your disassembler could differentiate between the two access modes and use different labels accordingly?
Distella only includes those equates for TIA registers that get actually used. I think this helps the readability a bit. Maybe your disassembler could do the same?
And it would be good if your disassembler could handle atleast the simple bankswitching formats that use accesses to fixed addresses to switch to a certain bank. I think there are at least two games for the 7800 that also use such a scheme, so this feature might be helpfull for your own purposes too. ;-) Maybe you could allow the user to define an area in the binary and set the origin for it. Then one could assign a hotspot address to that area and the automatic tracing routine would know when to switch banks.
And since you have to redirect the output into a file yourself, which affects all output of the program, maybe there is a way to get at least some sort progress indicator still displayed on the screen?
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