Re: Z80 Timings

2004-02-03 Thread Edwin Blink
I'm not aware of any outstanding issues in the latest SimCoupé betas, despite Dave and I throwing everything we can at them. Do you also have excact (pulse length) timings of interupt durations ? Edwin

RE: Z80 Timings

2004-02-03 Thread Simon Owen
Edwin Blink wrote: > I made some more test for the 4 Ts penalty It looks like it > occures once every 8 Ts (8 pixels?) For I/O accesses, add 4 tstates for the read/write, rounding up to the next multiple of 8 for ASIC ports (&F8 to &FF). For memory accesses, add 3 tstates for the read/write, rou

Re: Z80 Timings

2004-02-03 Thread Edwin Blink
I made some more test for the 4 Ts penalty It looks like it occures once every 8 Ts (8 pixels?) and when you have multiple INs at multiples of 8Ts intervals with a minimum of 16 Ts ofcourse. only the first IN might get the penalty and the others won't because the first IN synched them(the same cou

For Sale: 256K SAM Coupe

2004-02-03 Thread Fred Bloggs
I never thought the day would come but Before I put this on Ebay I thought I'd offer it to the list in the hope it may find a better home. It's in good working order and comes complete with printer, cartridges, manuals and software. All offers considered. Highest offer wins. Buyer must pa