When using P89C669 to programme, what diffierence is there between using 64k Rom and using 96k?

I use the same programme and different Rom size, 64K and 96K. Then I fire them to Philips P89C669 separate. Then I use them and some functions don't work well using 96K one. Eg. some data is not correct...
When using P89C669 to programme, what diffierence is there between using 64k Rom and using 96k?

I use the same programme and different Rom size, 64K and 96K. Then I fire them to Philips P89C669 separate. Then I use them and some functions don't work well using 96K one. Eg. some data is not correct...
MEMORY HANDLING - uC P89C669 On-Chip XRAM

I'm using uC - P89C669 It is specified in data sheets uC P89C669 has 2KB of On chip RAM(data memory) & 64KB of ROM(Code Memory). I'm unable to use RAM above 768 Bytes. Also i'm using Keil uVision2...
MEMORY HANDLING - uC P89C669 On-Chip XRAM

I'm using uC - P89C669 It is specified in data sheets uC P89C669 has 2KB of On chip RAM(data memory) & 64KB of ROM(Code Memory). I'm unable to use RAM above 768 Bytes. Also i'm using Keil uVision2...
p89c669 edata handling in keil copiler

I m using p89c669 microcontroller for my development. In my software,using two array of size [672] bytes. I use xdata,idata and also pdata which totals 1k memory, but remaining 1k memory i m not able...