Questions about Pentagon128

TyÔ oÄÉÎ Ôo×apÉÝ ÐpocÉÌ ÚaÄaÔØ ×oÐpocÙ ÚÎaÔoËaÍ ðeÎÔaÇoÎa 128 :

- ÞÔo É × ËaËoÍ ÐopÑÄËe cÌeÄyeÔ ÚaÐÉcÙ×aÔØ eÍy × POM 27512 ?

- ÞÔo ÎyÖÎo ÉcÐpa×ÔØ × cxeÍe , ÞÔoÂÙ ÄoÂÉÔØcÑ ËoppeËÔÎoÊ ÄÌÉÔeÌØÎocÔÉ cÉÇÎaÌa
INT ?

- ËaË peaÌÉÚo×aÔØ ÐopÔ FF ?

- ËaË cÄeÌaÔØ ÐoÄËÌÀÞeÎÉe ËeÍÐcÔoÎ-ÄÖoÊcÔÉËa ?

CÐacÉÂo Úa ÐoÍoÝØ !

Aleksandr

AJ> - what and in what order should it be written to POM 27512 ?

PROFI

0000-4000 CPM PROFI
4000-8000 TR-DOS
8000-C000 SOS 128
C000-FFFF SOS 48

PENTAGON 128

0000-4000 ZX LPRINT 3 (OR EMPTY)
4000-8000 TR-DOS
8000-C000 SOS 128
C000-FFFF SOS 48

ATM TURBO 512k

0000-4000 SOS 48
4000-8000 TR-DOS
8000-C000 SOS 128
C000-FFFF ATM SOS

SCORPION 256

0000-4000 SOS SCORPION 256
4000-8000 SOS 48
8000-C000 SOS MONITOR
C000-FFFF TR-DOS

KAY 1024

0000-4000 ????
4000-8000 TR-DOS KAY
8000-C000 SOS KAY 1024
C000-FFFF SOS 48

ATAS 256

0000-4000 TR-DOS ???
4000-8000 SOS ATAS 256
8000-C000 TR-DOS ???
C000-FFFF SOS 48

AJ> - what needs to be corrected in the circuit in order to achieve the correct duration
AJ> of the INT signal?

Select a capacitor or resistor in the formation circuit to obtain
a duration of 9-11 microseconds. You can install a trim resistor.

Regards, Alex from FFC COMPUTERS.

>E-MAIL: asde...@softhome.net ICQ: #13064553

AJ> - how to implement the FF port?

Oberons 1-4. It's difficult to say more. They are located at zx.da.ru.

AJ> Aleksandr

With respect, Alex Noman.

AJ> - what and in what order should it be written to POM 27512?

Experimentally, with the help of subscribers to this conference, two
options of ROM firmware for the Pentagon were found. Here they are:

First option Second option

┌─────────┐ #0000 ┌─────────┐
│ EMPTY │ │ 128 │
├─────────┤ #4000 ├─────────┤
│ TR-DOS │ │ 4 8 │
├─────────┤ #8000 ├─────────┤
│ 128 │ │ EMPTY │
├─────────┤ #C000 ├─────────┤
│ 4 8 │ │ TR-DOS │
└─────────┘ #FFFF └─────────┘

[Team Kelly] [I ZX]
Hasta la vista.
Tim Kelly

... E-Mail: tim_...@mail.ru ICQ UIN: 34684028