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About C / Z80 optimizations (SDCC)

by zPasi on 04-09-2019, 20:47
Score: 138.24 %, Type: Forum topic , Comments: 186 comments
C-code differently. For example . unsigned char c; for (c = 0; c < 10; ++c) { // do something } generates much better Z80 code than int n; for (n = 0; n < 10; n++) { // do ... do: __sfr __at 0x06 myPort6; myPort6 = 22; testVar = myPort6; This won't stack ...

[VDP] V9938... Blinking "Text" in Screen 7...

by ducasp on 04-09-2019, 17:00
Score: 132.42 %, Type: Forum topic , Comments: 29 comments
page 0 and 1 at the same time, with the difference that page 0 would not have blinking text ... setting R#9 bit third bit to 0, R#2 to 0x7F and R#13 to 0x55 (835ms page 1 / 835ms page 0). So it would show half the time page 1 (just the background color) and half the time page 0 (whatever has been ...

Rare Metal Gear 2 article and many others

by Takamichi on 04-09-2019, 10:59
Score: 132.35 %, Type: Forum topic , Comments: 3 comments
A few days ago I found a short article on Metal Gear 2 written by Hideo Kojima in a magazine called BEEP! Mega Drive. I initially translated it myself , then a guy called Arc hound told me he already translated it as well as many other things ...

Converting MSX2+ RGB output to HDMI signal -- How?

by MP83 on 04-09-2019, 02:58
Score: 141.01 %, Type: Forum topic , Comments: 23 comments
https://laserbear.net/shop/ols/products/ossc-case/v/OSSC-EN-WHT I think there are other 3D printed OSSC cases available too but I haven't tried them ...
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