MG2 VDP frequency

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By mars2000you

Enlighted (5818)

mars2000you's picture

03-03-2021, 15:52

I think it's hardcoded in this part of the code:

  if (sync == VDP_SYNC_AUTO) {
        vdp->palMask  = ~0;
        vdp->palValue = 0;
    }
    else if (sync == VDP_SYNC_50HZ) {
        vdp->palMask  = ~0x02;
        vdp->palValue = 0x02;
    }
    else if (sync == VDP_SYNC_60HZ) {
        vdp->palMask  = ~0x02;
        vdp->palValue = 0x00;
    }

By Meits

Scribe (6330)

Meits's picture

03-03-2021, 16:41

Ivan wrote:
Meits wrote:

While the Japanese Space Manbow forces 60Hz, it's unofficual Dutch sequel Manbow 2 forces 50Hz.
Back in the day it could result in unwanted effects on a TV, but I doubt a lot of us still suffer from that Smile

I have always thought that Konami had in mind to release Space Manbow internationally because all in-game texts are in English and the game is from 1989 (well, late 1989) and other Konami MSX from that year arrived to Europe (Nemesis 3 and Contra).

I meant the country of production Smile

By Ivan

Ascended (9266)

Ivan's picture

03-03-2021, 19:45

Meits wrote:
Ivan wrote:
Meits wrote:

While the Japanese Space Manbow forces 60Hz, it's unofficual Dutch sequel Manbow 2 forces 50Hz.
Back in the day it could result in unwanted effects on a TV, but I doubt a lot of us still suffer from that Smile

I have always thought that Konami had in mind to release Space Manbow internationally because all in-game texts are in English and the game is from 1989 (well, late 1989) and other Konami MSX from that year arrived to Europe (Nemesis 3 and Contra).

I meant the country of production Smile

Yes, I know Smile My comment was as a side note. All Space Manbow texts are in English, quite suspicious, isn't it? My guess is that Konami was planning to release it outside Japan but who knows.

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