`GRUNNUR`
// If KIM16 is defined -- all this applies.
// ** Alynna's KIM16 (65816 based) memory map **
// == Page 00 ==
// 000000-0000FF    256     6502 mode zero page
// 000100-0001FF    256     6502 mode stack
// 000200-000FFF    3584    RAM (Reserved for 8 bit mode, do not use in Native)
// 001000-001FFF    1024    Reserved for legacy ROMS and IO
// 002000-00CFFF    44K     User RAM (6502 mode; E=1) OR
// 002000-00CFFF    44K     Stack page (65816 mode; E=0)
// 00D000-00FFE0    12856   Apple I / Kim 1 ROMS
// 00FFE0-00FFFF    32      65816 vectors
// -- 65816 8-bit RAM/ROM MAP -------------------------------------------------
// 4K RAM ($0000-$00FF)                                                 $000000
// 4K Legacy RIOT I/O, RAM and ROM system                               $001000
// disassembler: Baum & Wozniak disassember - Relocated to:             $001000
//  ROM1: KIM-1 ROM002 (monitor main code)                              $0017C0
//  ROM2: KIM-1 ROM003 (tape and RS-232 code)                           $001780
// 44K RAM ($2000-$CFFF)                                                $002000
// vtl-02: from 6502.org                                                $00DC00
// Apple-1 Basic                                                        $00E000
// Apple-1 ACI (cassette tape ROM)                                      $00F100
// Baum-Wozniak mini-assembler (run $FDDD) & Wozmon ($FF                $00FBAE
// ----------------------------------------------------------------------------
// 010000-01FFFF    64K     Page 01:   65816 default direct page / User SRAM
// 020000-03FFFF    128K    Page 02-03: 65816 fast SRAM
// 040000-7FFFFF    7936K   Page 04-7F: 65816 PSRAM
// 800000-9FFFFF    2048K   Page 80-9F: 65816 Flash ROM (User programs)
// A00000-BFFFFF    2048K   Page A0-BF: 65816 Paged ROM (User programs)
// C00000-DFFFFF    2048K   Page C0-DF: Reserved for remote framebuffer
// E00000-EFFFFF    1024K   IO area to ESP32 hardware (see IO Map)
// F00000-F0FFFF    64K     :discov
// -- 65816 mirror of page 0, with all ROMS -----------------------------------
// 4K RAM ($FF0000-$FF00FF)                                             $FF0000
// 4K Legacy RIOT I/O, RAM and ROM system                               $FF1000
// disassembler: Baum & Wozniak disassember                             $FF1000
//  ROM1: KIM-1 ROM002 (monitor main code)                              $FF17C0
//  ROM2: KIM-1 ROM003 (tape and RS-232 code)                           $FF1780
// 12K RAM ($FF2000-$FF4FFF)                                            $FF2000
// calc: 6502 floating point library from crbond.com/calc65.htm         $FF5000
// special I/O area for programmable calculator (part of calc@5000)     $FF7000
// mchess: microchess from benlo.com/microchess recompiled to start at  $FFC000
// vtl-02: from 6502.org                                                $FFDC00
// Apple-1 Basic                                                        $FFE000
// Apple-1 ACI (cassette tape ROM)                                      $FFF100
// Baum-Wozniak mini-assembler (run $FDDD) & Wozmon ($FF                $FFFBAE
// ----------------------------------------------------------------------------
// F10000-FFFFFF    960K    KIM16 Kernel

// -- 65816 IO map ------------------------------------------------------------
// E00000-E0FFFF    64K     KIM16 I/O ports
// Page E0:
//   0010-0013      DWORD   RGB LED (Red, Green, Blue, Brightness)
//   0020-0023      DWORD   SDCARD: Block to read
//   0024           BYTE    SDCARD status
//      7: 1=Block received in buffer
//      6: 1=Block successfully written
//      5: 1=SD Present
//   0025           BYTE    SDCARD 
//   0028-0031      DWORD   SDCARD size (0 if not present)
//   00A0-00BF      32      ROM page map from flash (64K pages from 8mb possible rom)
//   0200-03FF      512     SD Card block buffer
// E40000-EBFFFF    512K    Reserved for RP2350 based expansion
// EF0000-EFFFFF    64K     RAM to ROM Flash page