New OC

31 Aug 95, Fedin Pavel writes to Andrew MOA:

FP> It would be nice if
FP> someone provided similar information on ATM ports.

On the first ATM, it is unlikely that anyone will be able to say anything
in detail. A brochure with a description was released for Turbo 2+, maybe there are still some left in MikroArt (look in Mitino, place N4). There is a working description of the ports (it is
complete, but very incomprehensible):

------------------------------------------
Ports:
1.SYS_CS - 77h (byte) WITH TR-DOS ON
D0 - RG0
D1 - RG1
D2 - RG2
D3 - TURBO (1 - 7 MHz)
D4 - TON
D5 - TNAB
D6 - AD/KEY (0 - IBM PC XT KEYBOARD, 1 - ADC)
D7 - NMI reset (0 - active)
A8 - PEN (0 - DISABLE PAGE (PROGRAMMING MODE),1 - ENABLE PAGE)
A9 - DOS_ON (0 - SET TR-DOS ON & ENABLE PORTS SYS & PAGE)
A14 - PEN2 (0 - ENABLE CS FOR DSK_RAM & PAL_CS,1 - DISABLE)

Mode RG2&RG1&RG0
Sinclear 3
640x200 2
320x200 0
Text 6

2.PAGE_CS - F7h (BYTE) WITH TR-DOS ON
PAGE RAM INPUTS :
A0 - A14
A1 - A15
A2 - ROM2
A4 - ???
PAGE RAM OUTPUS :
D0 - RAM&ROM PAGE 0
D1 - RAM&ROM PAGE 1
D2 - RAM&ROM PAGE 2
D3 - RAM&ROM PAGE 3
D4 - RAM&ROM PAGE 4
D5 - ROM (1 - ENABLE ROM)
D6 - RAM (0 - ENABLE RAM)
D7 - MX_A (0 - ENABLE PAGE_NUM (0-2)FROM S128 PAGE_PORT (7FFDH)

3.ADC/KEYBOARD DATA PORT - 7D7Dh
4.MISC CONTROL READ PORT - 7FFDh
D7 - ADC/KEY READY (HIGH)
D6 - HARD INT (HIGH)
D5 - TELEPHONE LINE IS UP (HIGH)
D4 - BELL ON TELEPHONE LINE (HIGH)
------------------------------------------------------------

Or you can delve into the BIOS sources (it would be more accurate to call it a monitor)
from Turbo 2+ (look for /378, I uploaded it there once)

FP> And one more thing. I still
FP> have not found any decent information on the IDE hard drive. But I myself need all this
FP> information. Without this, I won't be able to write a good OS.

It's there. A lot of information, and all different :( An experimental working version
is in the above-mentioned BIOS.
There are also different descriptions of the interface, a total of 7 different sources ranging in size from
11k to 383k (cover IDE, ATA1, ATA2, ATA3) and correspondence regarding ATA on
1m.

BBS and no freqs :(

Roman

Sun 20:45 26 Mar 1995 Fedin Pavel writes to Michael Markowsky:

FP> Thanks for your help. I just wish I could be more specific.
FP> What does all this mean?
FP> What is CPUSYS? And what are those CP/M ports you mentioned? Where
FP> HDD and serial port?

I have no idea. I've never had ATM. And this information is from letters in this
echo.

FP> Best wishes, Fedin Pavel!

Best wishes! Michael KLUG

FP>> OS.

RK> It is there. A lot of information, and all different :( Experimentally
RK> there is a working version in the above-mentioned BIOS.
RK> There are also different descriptions of the interface, a total of 7 different sources
RK> sizes from 11k to 383k (cover IDE, ATA1, ATA2, ATA3) and correspondence
RK> regarding ATA on 1m.

RK> There are no BBS and freeware :(

Maybe you can give me a hint? Otherwise I can’t really work with the screw. There is
a small description, but it’s terribly poor. :-(

MM>> Port 0FBh (read with A2=0) : - Printer READ
MM>> A7(1) - CPSYS ON ┬ RAM and ROM allocation in CP/M mode
MM>> A7(0) - CPSYS OFF ┘

FP> What is CPUSYS?
A signal that disables the Spectrum ROM from window 0 and connects the page with Bios.
FP> And what are the CP/M ports that you mentioned?
We were talking about the 1st ATM, and accordingly its ports.
FP> Where is the HDD and serial port?
And the HDD is only in Turbo2+. As for the serial port - it is on
the board, but in Rf2 for 8031 ​​there is not even a hint of its software support.
In the next letter I will give a short description. Everything that is mentioned there applies
only to the Turbo2+ v7.0-7.10 computer

A7(0) - CPSYS OFF ┘
CPSYS signal that determines the location of RAM and ROM in the address. space
processor.
CPUS-user signal, used when working in CP/M, allows
to install in addresses 0-16384 or BIOS ROM or 4th page of RAM, optional.

Sinclair 128 │ CP/M SYSTEM │ CP/M USER
│ │
CPSYS=OFF ROM 0/1 │ CPSYS=ON ROM SYS │ CPSYS=ON PAGE 0
CPUS=OFF PAGE 5 │ CPUS=OFF PAGE 5 │ CPUS=ON PAGE 4
PAGE 2 │ PAGE 2 │ PAGE 2
PAGES │ PAGES │ PAGES

ROM 0/1 - ROM firmware Sp128/Sp48
ROM SYS - ROM firmware BIOS CP/M
PAGE - corresponding RAM pages

You can switch SPSYS by reading from the ports:
IN A, (#FB) ;%11111011 SPSYS ON i.e. A7=1 A2=0
IN A,(#7B) ;%01111011 SPSYS OFF i.e. A7=0 A2=0

For example, being in Spectrum-128 mode, you can install the BIOS ROM instead of the Sp128/48 ROM, read, for example, the BIOS version and go back:

test_proc
IN A,(0FBh) ;exit to the BIOS SPSYS ON
LD DE,0
LD A,(DE)
LD HL,flag_5
CP 0F3h ;in the BIOS at the beginning of the firmware there is DI: JP xxxx
JR NZ,3$
INC DE
LD A,(DE)
CP 0C3h
JRNZ,3$
;---------------------
;BIOS found ATM-turbo
;----------------------------
SET _atm,(HL)
LD HL,0FFFAh
LD (_DATA_PORT),HL
LD DE,version_num
CALL find_in_bios
LD (D5BDC),HL
JR NC,5$
JR 4$
3$ IN A,(7Bh) ;return from BIOS SPSYS OFF
;-----------------------
;found Sinclair 128
;-----------------------
SET _s128,(HL)
etc...

;--------------------------------------------------------------
Port 0FBh (write with A2=0) : - Printer WRITE (this clear..)
D0-D7 - CENTRONICS DATA
A7(0) - STROBE
When outputting data to the printer via CENTRONICS, they are simultaneously written
to the 572PA1 DAC (if present on the board), i.e. The so-called
kovox has been implemented, you can listen to digitized music (for the SR/M mode there is even a player of STM files, for the ZX Spectrum mode there were also demos, it seems from Flash Inc.)
;--------------------------------------------------------------
Port 7DFDh (write with A15=A9=A1=0) :
D0-D5 - bgrBGR (PALETTE) screen palette
Setting a palette of 16 colors out of 64 possible, in Honey-Commander 4.0 there is a
nice option - setting the palette and adjusting the color and brightness of the border, in addition to
setting colors, as a result in Spectrum mode you get interesting
color combinations (although, strictly speaking, this is no longerBest wishes, Fedin Pavel!

Sincerely, Konstantin. writer.

> a working version is in the above-mentioned BIOS. There are also different
> descriptions of the interface, a total of 7 different sources ranging in size from 11k to
> 383k (covering IDE, ATA1, ATA2, ATA3) and correspondence regarding ATA
> on 1m.
there is enough information in principle, IMHO, there are more problems with the operating system and file
structure (more precisely, without the operating system)...