P-Touch fun

Tuesday, January 29, 2019

Stellar 7 text font at 0x7900

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I found the text font at 0x7900. It goes from character 32 (space) to 127. 126 and 127 are tiny flag symbols. and we can write some lua...
Monday, January 28, 2019

More COS routine multiply analysis.

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Binary math really melts my brain. I'm not really designed to function in binary so I've been trying to figure out how the multiply...
Friday, January 25, 2019

Cos and Sin multiplication routine at 0xD00.

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So let's disassemble Stellar 7's cos and sin multiplication routine and write it to a file with the dasm command. dasm d00_multip...
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Thursday, January 24, 2019

Comparing the cosine table to math.cos

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Let's see how closely Stellar 7's cosine table compares to math.cos(). cpu = manager:machine().devices[":maincpu"];me...
Wednesday, January 23, 2019

Finding Stellar 7's cos table

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I really love the mame debugger. I've got a new project: to figure out how Stellar 7's code works. It's such a genius game, I ...
Saturday, January 12, 2019

Stellar 7 cheats

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Apple 2 version 81fc = shield b@81fc=92 max shield (don't go above 92 or will overwrite the boundary) 81fe = fuel b@81fe = 92...
Thursday, January 10, 2019

Sirius Joyport and mame's apple2 driver

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So I was reading up on the Sirius Joyport which was a box to convert Atari Joysticks to the Apple 2 Gameport and thought that it wouldn'...
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