The Sinclair QL Forum

Silvester wrote:SIP, isn't it ZIP package ? (https://en.wikipedia.org/wiki/Zig-zag_in-line_package)

SIP are "Single Inline Packeges" mostly used for single row resistor arrays.

Good luck! Since my new QL baseboard has an ATMega328P-PU onboard for matrix keyboard handling, Arduino related issues are becoming a bit more relevant for QL style hardware.

Martin_Head wrote:But PEEK($18000) don't work, it just returns zero. PEEK_W and PEEK_L are OK. Also PEEK$ returns zeros. I tried PEEKing $18000 in Qemulator under QDOS, and that worked OK. So I don't know if its a SMSQ/E or a Q68 thing.

Sorry had not seen that at first. Only longword access is allowed (same as QL).

ppe wrote:Turns out the temporary file name is actually not the problem. The problem is that for some reason, which I won't bother delving into, calling system() on QDOS requires command line arguments to be quoted a bit differently than what is done in the code.

Thank you for that amazing debug job!

Does the Q68 have a free running seconds counter at address 18000? Yes, a 32 Bit counter. Only longword access is allowed. There is a latching mechnism which prevents number roll-over between the two 16-bit accesses on the bus. The bootloader initializes the counter from the value provided by the b...

But I think you would also have to change something in the systems boot up code, that writes to the RTC chip to set the trickle charge for the battery, or disable it entirely if a non rechargeable battery is used. Indeed one can not simply add a battery without changing the bootloader code as the R...

You can have a Warp 1260 in your Amiga and still experience a slowdown (because you - or the system - decided to run the program in chip mem). Thanks for explaining, although that would be a weird memory allocation for a dhrystone benchmark. The comparison sysinfo versus QL dhrystone on the same Am...

Nice. Do you think it makes sense to try sysinfo dhrystone versus QL dhrystone on it? Or would the emulation (JIT compiler?) make things meaningless?

Maybe go for QDOS Classic:
http://www.dilwyn.me.uk/emu/#QDOS_Classic_for_Amiga

A CPU-only replacement like the Warp 1260 obviously has to use the "original" chip RAM on the motherboard to communicate to the chipset. Why should that matter for Dhrystone? It does not involve graphics, sound, etc. I can hardly imagine the Warp 1260 spends more than a few percent of it'...