DivIDE JUMPERS



DivIDE interface contain two jumpers.
- Left jumper is on board signed as "E" or "JP2"(on old PCB versions) and is used for enable divide memory+write enable to EEPROM (for reflash system).
Onwards 2007 is in DivIDE interfaces use new R GAL chip signed as R"GAL.  This versions support also new allram mode 16kB paging (if jumper E is open) !!!
- Right  jumper is signed on board as "A" and is used for ZX128+2A/+3 computers only.

 

For ZX16/48/128/+2 models  

 

 

 

For ZX128+2A/+3 models

DivIDE memory enable
+ write EEPROM protected
+ disable 16kB allram paging ( * )

DivIDE memory enable
+ write EEPROM protected
+ disable 16kB allram paging ( * )

DivIDE memory disable (work only IDE ports)
+ write EEPROM enable
+ possibility active 16kB allram paging ( * )

DivIDE memory disable (work only IDE ports)
+ write EEPROM enable
+ possibility active 16kB allram paging ( * )

 

JUMPERS INFO

Jumper E (JP2) must be closed:
- for enable DivIDE memory automapper
- for write protection EEPROM memory
- for disable allram mode ( * )

Jumper E (JP2) must be open:

- if you reflash EEPROM
- if DivIDE memory must be disabled (only IDE ports can be used)
- in 16kB allram mode ( * )

Jumper A must be closed:
- if DivIDE is connect to ZX128+2A or +3 models

Jumper A must be open:
- if DivIDE is connect to ZX models ZX16/48/128/+2(grey)


( * )  -  This features is available only on DivIDE interface with new R"GAL chip. DivIDE with this GAL is possible buy at DIVIDE SHOP. Old DivIDE interface can be also upgraded if you replace R-GAL chip with new R"GAL (possible buy in same shop)