Re: question about MegaSCSI Info
At 08:00 PM 5/27/99 +0200, you wrote: Here, in Input, when B=0, this mean 256 sectors, not 0. Did you known that? No, but anyway this is not useful... you need a 128K addressing space if you want to read 256 sectors with just one call!! 8-) But it's very important to know that trying to load 0 sectors will crash your MSX instead! Bye, Maarten MSX Mailinglist. To unsubscribe, send an email to [EMAIL PROTECTED] and put in the body (not subject) "unsubscribe msx [EMAIL PROTECTED]" (without the quotes :-) Problems? contact [EMAIL PROTECTED] (www.stack.nl/~wiebe/mailinglist/)
Re: question about MegaSCSI Info
The MegaSCSI's manual, original in Japanese, said that you can acess the "function calls" using two entry points, #7FCC and #7FCD. But I didn't understood what is the difference. Do you know that? I did not know... I dissassembled MegaSCSI SRAM today for see this. If you do call through #7FCC, an EI is performed before the other stuff. This is the only difference. Here, in Input, when B=0, this mean 256 sectors, not 0. Did you known that? No, but anyway this is not useful... you need a 128K addressing space if you want to read 256 sectors with just one call!! 8-) Well, I think which could be good idea to write it in your Info. :-) (I read it from the original manual in Japanese) W you can read japanese... 8-O I can read only kanas yet!! (_ _!) * XVI MSX USERS MEETING IN BARCELONA: NOVEMBER 27th 1999 * Konami Man - AKA Nestor Soriano (^ ^)v - Itsumo MSX user New web address: http://konamiman.msx.tni.nlhttp2//nestor.msx [EMAIL PROTECTED] ICQ#: 18281450 Metal Gear for MSX - (C) Konami 1987 (Nothing new under the sun...) MSX Mailinglist. To unsubscribe, send an email to [EMAIL PROTECTED] and put in the body (not subject) "unsubscribe msx [EMAIL PROTECTED]" (without the quotes :-) Problems? contact [EMAIL PROTECTED] (www.stack.nl/~wiebe/mailinglist/)
question about MegaSCSI Info
Nestor Soriano, I read your MegaSCSI's info. (Thanks for that) and now I have a question for you. - All of the BIOS routines listed here must be called through an entry point placed at address #7FCC on MegaSCSI addressing space. You can do this via direct CALL or via interslot call. The MegaSCSI's manual, original in Japanese, said that you can acess the "function calls" using two entry points, #7FCC and #7FCD. But I didn't understood what is the difference. Do you know that? * Sector read and write Input: A = #00 + DOS drive number, or #40 + extended partition number Cy = 0 for read sectors 1 for write sectors B = Number of sectors to be accessed C = First sector number, bits 23 to 16 DE = First sector number, bits 15 to 0 HL = Source/destination buffer address for the data Output: Cy = 1 if error A = error code if Cy=1 B = number of sectors actually accessed Here, in Input, when B=0, this mean 256 sectors, not 0. Did you known that? Well, I think which could be good idea to write it in your Info. :-) (I read it from the original manual in Japanese) Best Regards. Alex Mitsio Sato MSX Mailinglist. To unsubscribe, send an email to [EMAIL PROTECTED] and put in the body (not subject) "unsubscribe msx [EMAIL PROTECTED]" (without the quotes :-) Problems? contact [EMAIL PROTECTED] (www.stack.nl/~wiebe/mailinglist/)
