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rampa069 / ZX-ESPectrum

A ZX spectrum 48K/128K emulator running on ESP32 with bitluni ESP32 VGA Board (also in TTG VGA32)
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Change from SPIFFS to SD card and get Guru meditation (loadprohibted) #4

Closed fg1998 closed 3 years ago

fg1998 commented 4 years ago

I´m trying to change all SPIFFS access to a SD Card on port 16. It looks like a very simple changes, and works great for 48k ROMS - boots and works OK. But loading SNA has a very strange behavior - works OK for fantasy.sna but none for other SNA (including Manic Minner what works on SPPIFS). Getting 'guru meditation errors' ater load_ram

Some Log from COM

Some Help ?

-------------------------------CUT HERE----------------------------------------------------

Free heap after Z80 RESET: 150656b Loading ROMSET '/rom/48k/SINCLAIR' Getting entries from: '/rom/48k/SINCLAIR' Found FILE: /rom/48k/SINCLAIR/0.ROM...16384b...0.ROM...ADDING Processing 1 ROMs Loading file '/rom/48k/SINCLAIR/0.rom' Loading ROM '/rom/48k/SINCLAIR/0.rom' ** loadRam Free heap before SNA: 146012b Loading file '/sna/manic.sna' 38 Free heap after SNA: 146012 Ret address: 38 Stack: 7529 AF: 54 Border: 0 sna_size: 49179 rom: 1 bank: 0 *** END LOAD RAM End of setup Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled. Core 1 register dump: PC : 0x400d969a PS : 0x00060130 A0 : 0x800d95bf A1 : 0x3ffb1f30
A2 : 0x00000038 A3 : 0x00000000 A4 : 0x3ffba8d8 A5 : 0x00000000
A6 : 0x00000000 A7 : 0xff000000 A8 : 0x00000000 A9 : 0x3ffb1f10
A10 : 0x0000084c A11 : 0x00000000 A12 : 0x0000084c A13 : 0x000075c0
A14 : 0x00060320 A15 : 0x00000000 SAR : 0x0000000a EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000038 LBEG : 0x400014fd LEND : 0x4000150d LCOUNT : 0xffffffff

Backtrace: 0x400d969a:0x3ffb1f30 0x400d95bc:0x3ffb1f50 0x400d9a14:0x3ffb1f70 0x400d5168:0x3ffb1f90 0x400dd5b9:0x3ffb1fb0 0x4008d4c1:0x3ffb1fd0

Rebooting...

jorgefuertes commented 4 years ago

Hi Fernando.

As far as I remember we didn't tried it loading over SD, but it sounds to me as a lack of RAM problem, it may happen depend on the chip model, some mount less RAM.

Try to activate "#define COLOUR_8", it saves some RAM. You may deactivate some 128K model's banks too.

I'm sorry if don't help you too much, I have if a bit rust right now.

jorgefuertes commented 4 years ago

Wait, Fernando, my partner Rampa just called me and he believes he has another not yet uploaded branch with a complete SD support. He is doing an upload today.

fg1998 commented 4 years ago

Thanks Jorge, it´s great to hear about a new branch with SD Support. Of course, don´t hesitate if you need some help from me.

It really looks RAM issue, but I had another ESP32 here to test, so I´ll do soon (and deactivate 128k modes) and other tests too.

Thanks for both of you for a great job on ESP32

Stay safe and health

jorgefuertes commented 4 years ago

Of course, pull requests are very welcome!

fg1998 commented 4 years ago

Hi Folks ! Any news ?

jorgefuertes commented 4 years ago

I'm sorry, only @rampa069 seems to have the SD support on its local sources. I'll ask him again.

abelykh0 commented 4 years ago

FYI, I created a pull request that uses SD on a VGA32 v1.4 board. You can get an idea from there. On this board the pins for the SD card reader are: CS - 13, MOSI - 12, MISO - 2, CLK - 14.

jorgefuertes commented 3 years ago

Pull request merged.