here's a little

Hello All! Here's some information of all sorts. === Cut === (c) Disassembly and analysis by Jason. Determining the presence of a screw and the status of the disks. All of the following is true for SMUC controllers versions with 1.1 to 1.3. ROM version code - 96 and higher. Controller version 1.3 is recognized as final. And version 1.0 - This is beta and glucodrome, and has not been widely sold. By the way, firmware with code 95 is tailored for ports from 1.0. company documentation, the hard drive can work with ROM with code no lower than 96. The contents of port #7FBA in the trdos I/O space allow quickly find out the status of devices A and B. Essentially, this port is a two-bit memory cell. Designed to quickly find out without going anywhere what is where, and how to contact where. Available for both recording and for reading. For any (manual or software) connection/disconnection images of hard floppy disks, the shadow guy always gives the meaning of this - th port, in accordance with the changed status of the devices. It is usually read by trdos herself, when she needs it. Bits 6 and 7 determine the status for A and B, respectively. If the bit is set, then the device is connected to the driver. the hard drive is verified, and the floppy disk image is accessible via #3D13 or via RST 8. If the bit is cleared, then the device is a real dis- drive, and is available using standard means for disk drives.All other bits are currently unused, and must always be in unit. Disks C and D cannot be real disk drives - check Lep does not support this. # disclaimer: although initially the Scorpio board does not support drives C and D, but if desired and skillful, they can be connected Lucena, which should be kept in mind. ;checking the speed and presence of the screw. ;output: flag C=1 - no screw CHECKHD D.I. LD A,(#0008) CP#C3 JR C,NO_HDD ;not scorped at all LD BC,#1FFD LD A,#02 OUT (C),A ;on shadow worker LD A,(#00F1) ;took the version code LD E,#00 OUT (C),E ;off shadow worker CP 96 JR C,NO_HDD ;ROM old LD BC,#FFBE CALL RD_DOS CP#FF JR Z,NO_HDD ;status register empty XOR A RET ;screw present NO_HDD SCF RET ;no screw ;---------------------------------; ; check the drive itself ;the DRIVE variable should contain the number 0...3. ;output: flag C=1 - real disk drive DRIVE EQU #5CF6 ;drive number (0-3) TEST LD A,(DRIVE) AND #3 CP#2 JR NC,OK_HDD ;C and D are _always_ on the screw RRAJR C,TEST_B TEST_A LD BC,#7FBA ;check A CALL RD_DOS BIT 6,A JR NZ,OK_HDD ;A on the screw SCF RET ;A on a floppy disk TEST_B LD BC,#7FBA ;check B CALL RD_DOS BIT 7.A JR NZ,OK_HDD ;B on screw SCF RET ;B on a floppy disk OK_HDD OR A ;device on screw RET RD_DOS LD HL,#3FF3 PUSH HL JP #3D2F === Cut === WBR, Jason.

Let your enemies, Valerij, die without sons! 10/18/98 at 01:23:42 Valerij Kozhevnikov ═> All: VK> All of the following is true for SMUC controllers, versions c VK> 1.1 to 1.3. ROM version code - 96 and higher. VK> Controller version 1.3 is recognized as final. And version 1.0 - VK> this is beta and glucodrome, and was not widely sold. VK> By the way, firmware with code 95 is tailored for ports from 1.0. And by VK> proprietary documentation, a ROM with can work with a hard drive VK> code not lower than 96. I laughed for a long time when I read this... :) Do you want a trick? When I I was writing my first analyzer for the presence of a scorpion screw, and I I think that it was I who wrote this first, because you don’t spit My structure is used everywhere, even the E register when clicking y port... So, I took the number 96 out of thin air... My firmware is number 98, and, knowing that the screw has already been used on earlier firmwares, I decided “let it be 96”... And the stupid people believed. :) And it produces ideological errors like “there was no screw before ’96.” :) Question: according to some kind of proprietary documentation? Well, as they say, I shot with my eyes closed, but I hit ten. :) [nonsense about port #7fba skipped]IMHO, such heresy... Okay, let's leave him alone. VK> Disks C and D cannot be real disk drives - control VK> lep does not support this. VK> # disclaimer: although initially the Scorpio board does not support VK> drives C and D, but if desired and skillful they can be connected VK> are enabled, which should be kept in mind. In-in... And although the fucking scorpion dos does not allow work thief with c & d disks via #3d13, you can still attach them. And They will be available through #3d2f. And the piece below is these will look through the drives. VK> ;checking the speed and presence of the screw. VK> ;output: flag C=1 - no screw VK> CHECKHD VK> VK> VK> DI VK> LD A,(#0008) VK> CP #C3 VK> JR C,NO_HDD ;not at all ~~~ Nu-nu... VK> VK> LD BC,#1FFD VK> LD A,#02 VK> OUT (C),A ;on. shadow VK> LD A,(#00F1) ;took the version code VK> LD E,#00 VK> OUT (C),E ;off shadow VK> CP 96 VK> JR C,NO_HDD ;ROM old VK> VK> LD BC,#FFBE VK> CALL RD_DOS VK> CP #FF This feint is not entirely clear. This is reg. comp. the screw itself? VK> JR Z,NO_HDD ;status register empty VK> XOR A VK> RET ;screw present VK> NO_HDD VK> SCF VK> RET ;no screw Or maybe the old way? D.I. LD A,(#0008):CP #C3:SCF:RET NZ LD BC,#1FFD,DE,#0200 OUT D:LD A,(#00F1) OUT E CP 96:RET C XOR A:LD H,A LD C,#26:RST #08:DB #81:RET C ... ; Here you can set the screw presence variable. ... RET Let's go further, drive through Sochi... VK> ;------------------------------; VK> ;checking the drive itself VK> ;the DRIVE variable should contain number 0...3. VK> ;output: flag C=1 - real disk drive VK> VK> DRIVE EQU #5CF6 ;drive number (0-3) VK> TEST VK> LD A,(DRIVE) VK> AND #3 VK> CP #2 VK> JR NC,OK_HDD ;C and D are _always_ on the screw IMHO, it's a mistake. Larchenko's crooked hands are not a reason to to give up two drives. VK> RRA VK> JR C,TEST_B VK> TEST_A VK> LD BC,#7FBA ;check A VK> CALL RD_DOS VK> BIT 6,A VK> JR NZ,OK_HDD ;A on the screw VK> SCF VK> RET ;A on a floppy disk VK> TEST_B VK> LD BC,#7FBA ;check B VK> CALL RD_DOS VK> BIT 7,A VK> JR NZ,OK_HDD ;B on the screw VK> SCF VK> RET ;B on a floppy disk VK> OK_HDD VK> OR A ;device on screw VK> RET VK> RD_DOS VK> LD HL,#3FF3 VK> PUSH HL VK> JP #3D2F What a disaster! Or maybe: LD A,(CONST):ADD A,A:CCF:RET C ;Assume that the set 7th bit of a certain variable indicates ;calls for the presence of a screw. LD A,(DRIVE),H,A:OR #80 LD C,#23:RST #08:DB #81:RET That's it. :) This method also has many disadvantages, but... More. It seems to me that the shadow worker (in the sense of Larchenko) has glitches associated with this particular “port”. Otherwise, what the hell he sometimes climbs on the physical drive, although he is mounted to the disk screw? Well, I don’t trust Larchenka... :) Best wishes, Oleg aka Ruiner.