Now I am going to solder the pins, but as Zozo has pointed, some pins go on different place on the Flash chip:

This is the SRam:
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And this is the Flash-Rom:
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-Pin 3, on SRAM is A14, on Flash-ROM is A15.
-Pin 29, on SRAM is /WE, on Flash-ROM is A14.
-Pin 31, on SRAM is A15, on Flash-ROM is /WE.

The pins must be rotated with three little leads.

Also /CE on pin 22 should be left free, as it goes to pin 19 of the GAL.

And at last, a cut must be made on Saint's board, at least in my version:

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Tested and working.

The next  task is to solder the RTC.

RTC soldered, but I think it is still not working.

What happened?

The new RTC chips shipped in stopped sate (for power save), need to be initialised.
SET 142,8
:DATE
:TIME
:HWRITE
SET 142,0

Pear is making some measurements with the internal expansion headers.

This picture is to show how the second header is placed under the narrowing in the upper housing at the external expansion port. The red line marks the limit of the narrowing, about 7 mm over the main board.

I think I found the solution
The small L-shaped board.
I added signals /M1, /IORQ, /RESET and /INT.

Previously I thought about crimp IDC connector, but they are too high.

I think I found the solution

A very clever approach. Then you will cut that higher ends of the pins, wouldn't you?

Pin1 connected to +5V? (Motorola mode)

Pin 1 of the Dallas chip not connected.

EXP2 is correctly connected,  I only draw +5 and GND from it.

But I have a doubt on the pin-out of EXP1, it can be I have swapped column A and B on that header.

In your web page , column B is near  the external connector or near Dave chip?.

------------------------

Edit: correct, B is at the outside.

A very clever approach. Then you will cut that higher ends of the pins, wouldn't you?

It's only a model. The pins will need to trim, because otherwise case will not close.

I have discovered an error on the ATF chip program, it needs PwrOn signal to work. Then I have put that signal on pin 11 and soldered that pin to GND.

  Name     RFC2;
    PartNo   00;
    Date     2015-12-20;
    Revision 01;
    Designer Engineer;
    Company  none;
    Assembly None;
    Location none;
    Device   g22v10;
    
    /* *************** INPUT PINS *********************/
    PIN 1   = !IORQ   ; /* IORQ */
    PIN 2   = !M1     ; /* M1 */
    PIN 3   = A7      ; /* A0 */
    PIN 4   = A6      ; /* A1 */
    PIN 5   = A5      ; /* A2 */
    PIN 6   = A4      ; /* A3 */
    PIN 7   = A3      ; /* A4 */
    PIN 8   = A2      ; /* A5 */
    PIN 9   = A1      ; /* A6 */
    PIN 10  = A0      ; /* A7 */
    PIN 11  = !PwrOn  ; /* power on */ /* put permanently to GND*/
    
    /* *************** OUTPUT PINS *********************/
    PIN 14  = !CS     ; /* enable buffer */
    PIN 23  = !CSRTC  ; /* enable RTC */
    PIN 22  = ASRTC   ; /* enable RTC address */
    PIN 19  = DSRTC   ; /* enable RTC data */
    
    VselRTC = IORQ & !M1 & A1 & A2 & A3 & A4 & A5 & A6 & !A7;
    VcsRTC  = VselRTC & PwrOn;
    
    /* *** CS *** */
    CS      = VcsRTC; /* ok */
    
    /* *** CSRTC *** */
    CSRTC   = PwrOn;
    
    /* *** ASRTC *** */
    ASRTC   = VselRTC & !A0;
    
    /* *** DSRTC *** */
    DSRTC   = VselRTC & A0;
    

But it still doesn't work.