about VG-shki

here, I observe - the track is read in a few revolutions of the disk, that is
the data flies into the header several times, is this either data in pieces
or a comparison with previous attempts?
I also noticed that the computer goes through the tracks faster, even when it's a Speck
disc reads...

and, by the way, on the RK-86 there was no special microcircuit at all, everything
was attached to the BB55 plus a bunch of logic - and nothing worked...

I’m just thinking of cramming the entire (almost) flop controller into one chip (having studied
the RK circuit, I realized that it’s not very difficult), here’s just some information
on working with a flop drive on FM-MFM almost none... but it’s a pity, because the scheme would consist
only of the sample #3d00-ff ...

Good luck,All !

[ Sandra ] [ZX] [Intel Must Die] [CoModerator of NetMail] [Punks Not Dead]

15 Aug 2000 at 02:44, Wlad Sorokin ═> All:

WS> here, I observe, the track is read in a few revolutions of the disk, that is

where? For what? he (who?) has nothing to do, or what?

WS> the data flies into the computer several times, is it either data
WS> in pieces or a comparison with previous attempts?

this is a dream of the mind that gives birth to monsters.

WS> I also noticed that the pisyuk goes through the tracks faster, even when the Speck
WS> disk is reading...

normal Spectrum software reads the flop in 32 seconds - so that the PC
only swallows dust.

WS> I’m just thinking of cramming the entire (almost) flop controller into one chip (having studied the
WS> circuit diagram, I realized that this is not very difficult), but there is almost no information
WS> on working with the flop drive on FM-MFM... which is a pity, because the circuit
WS> would consist
WS> only of the sample #3d00-ff ...

what's the point?

[ WBR, Oleg. ]
[ 12:45 15 August XXXV A.S. ]

WS>> (having studied the PK circuit, I realized that it’s not very difficult), that’s just
WS>> there is almost no information on working with a floppy drive on FM-MFM... which is a pity, because the circuit
and also on FM can (should) be hammered in altogether...
WS>> would consist only of the sample #3d00-ff ...
OG> what's the point?
the point is that the controller will fit on a board the size of a credit card...
and it won't burn.

Good luck, Oleg !

WS> I wouldn’t say that, but I calculated it – a little less than 40 seconds...

Your stopwatch is faulty. :) here you go:
── { Begin } ──────────────────── ───────────────────── { X .C } ──

DR EQU #00

ORG #6000

DI
LD A,#3C+DR
CALL TOPRFF
LD A,#08
CALL COMWG

LD HL,#4000
LD D,L
LD E,L
LD BC,#0A00
L0 CALL RS
JR C,L0
INC H
RES 4,H
INC E
BIT 4,E
JR Z,$+#04
LD E,L
INC D
DEC BC
LD A,B
OR C
JR NZ,L0
RET

;************************************************
;
RS PUSH HL
PUSH DE
PUSH BC
SRL D
LD A,#3C+DR
JR NC,$+#04
LD A,#2C+DR
CALL TOPRFF
LD A,D
CALL TOPR7F
LD A,#18
CALL COMWG

LD A,(#5CD6)
PUSH AF
LD A,E
INC A
CALL TOPR5F
LD BC,RS0
PUSH BC
LD BC,$
PUSH BC
LD B,#01
PUSH BC
LD BC,#2099
PUSH BC
LD BC,#3FD7
PUSH BC
LD A,#80
CALL TOPR1F
LD BC,#017F
LD D,C
JP #3D2F

RS0 POP BC
LD A,(#5CD6)
CP B
LD A,B
LD (#5CD6),A
POP BC
POP DE
POP HL
SCF
RET NZ
CCF
RET

;---------------------------------------
;
COMWG CALL TOPR1F
INTRQ LD IX,#3FE5
JR DOS

TOPR1F LD C,#1F
JR TOPR
TOPR5F LD C,#5F
JR TOPR
TOPR7F LD C,#7F
JR TOPR
TOPRFF LD C,#FF
TOPR LD IX,#2A53
DOS PUSH IX
JP #3D2F

── { End } ───────────────────── ────────────────────── { X .C } ──

what kind of asm do you use? damn, it took me twice as long to bring it to canonical form than it took to write it.

OG>> what’s the point?
WS> the point is that the controller will fit on a board the size of a credit
WS> card... and it won’t burn.

what’s the point? do you want to set up mass production? this won't be on the Spectrum
anymore.

[ WBR, Oleg. ]
[ 14:02 17 August XXXV A.S. ]

15 Aug 00 02:44, Wlad Sorokin wrote to All:

WS> I see that the track is read in a few revolutions of the disk, that is,
WS> the data flies into the header several times, is it either data
WS> in pieces, or a comparison with previous attempts?

Not a big deal? format with interaction.

WS> I also noticed that the pisyuk goes through the tracks faster, even when the Spekov one

It can’t be, it’s a pisyuk!

WS> and, by the way, on the RK-86 there was no special microcircuit at all, everything
WS> was attached to the BB55 plus a bunch of logic - and nothing worked...

%-)

WS> I’m just thinking of cramming the entire (almost) flop controller into one chip
WS> (having studied the RK circuit, I realized that this is not very difficult), but
WS> there is almost no information on working with the flop drive on FM-MFM... which is a pity, because the circuit
WS> would consist only of the #3d00-ff sample...

Only in RK it is completely incomprehensible disc format that is not compatible with anything.