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Refer to the section above on how to dump the ROM. Philips 22ER9956/40 mini DVC: Removing the ROM and fitting a socket Then, use the desoldering gun again from the bottom until the chip is free.
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by heating them up and removing as much solder as possible with desoldering wick. Some of them are very persistent and need additional work from the top, e.g. Then, use a powerful desoldering gun because the pins are soldered from both sides. To remove the EPROM, first apply flux and fresh leaded solder to all pins. But I’ve seen socketed EPROMs before and if this is the case with your DVC, you can skip the following step. Remove the DVC and inspect it: Usually, it has a 27C1024 EPROM soldered to the PCB. HxD), select 16.144 ($3F10) bytes starting from address $34F2A and copy them to a new file (e.g. You’ll get the right address with cdilink -info. Don’t worry if your player has a different revision of the ROM the module sv should be the same for all 490 ROMs and is only located at a different address. The module sv starts at address $34F2A, has the size of 16.144 bytes and the 24-bit CRC 411228. This is the ROM I was using: cdi490a17.rom (ID 77, R1.7, CRC 9A10DA73). Srec_cat cdi490a.rom -binary -byte-swap 2 -o cdi490a_swap.rom -binary
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If the programmer software doesn’t support that, you can use the SRecord tools to convert it. If you are using an EPROM programmer, make sure to save the file in little-endian format. You can dump it either via CD-i Link (option -roms) or with an EPROM programmer. Prerequisite: sv moduleįirst of all, you’ll need the dump of a CDI490 system ROM.
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In this article, I will show you a simple ROM patch to enable the Service Shell for the CDI660. When CD-i Emulator with -testplug option showed the same behaviour, CD-i Fan figured out what is causing this error: The Service Shell module sv is missing from the 660/670 system ROM. However, this wasn’t a very practical approach because I had to open up the player and dig out the system ROM from underneath the DVC every time. My solution so far was to use a 490 system ROM in the 660 whenever I needed the Service Shell (the compatibility and also the error were discovered during this experiment). I expected it to boot into the Service Shell, like most other CD-i players. Didn't even know there was a Hercules version.For quite some time, I was puzzled why my CDI660 was stuck in a reset loop after I inserted the test/dummy plug into Input 1. I remember playing this in primary school, but on VGA. My slowest PC is a 286/12 with 1MB RAM and a clone Herc card, it runs perfectly on this machine, give it a go and tear up the streets in your vintage American hot rod! Get the Street Rod SE version as the hercules files seem to be missing from the original, anyhow no reason to go for the non SE as you only lose content but don't gain anything.
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He is one of my all time favourite games and it works a treat on Hercules and it's officially been released for free by the original makers also, double bonus!
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It's beautiful, now I must install and play it! BSA Starfire wrote on, 03:56: He is one of my all time favourite games and it works a treat on Hercules and it's officially been released for free by the ori Some of the cleanest, well drawn Hercules gfx you'll see this side of the Milky Way. I don't think anyone mentioned Korean Dungeon Boy yet. The projectiles and explosions in Space War would pop out visually with increased brightness, for instance. □ I never knew the Hercules Graphics Card was capable of displaying graphics at 640x400 resolution!īy the way, do you agree that it's a shame that the developers of the HGC never bothered to implement a graphics mode that supported both brightness levels for individual pixels, like it did in text mode? Variable pixel-level brightness combined with dithering at 640x400 resolution would have made it possible to display many games designed for 320x200 16-color graphics at a much higher quality!Īlso imagine what possibilities that would have given to games that would be designed to take advantage of the native graphics capabilities of such an improved Hercules card. Every time I think I know all there is to know about the MS-DOS era, I get proven wrong and learn something new about that magical time that I never knew before. That screenshot is 640x400 - so it must be using the undocumented 640x400 interlaced mode.įascinating, I didn't know there was some software actually using that mode.