recipes/z80mbc2/Makefile

@@ -1,13 +0,0 @@
-TARGET = os.bin
-BASEDIR = ../..
-EDIR = $(BASEDIR)/emul
-STAGE = $(EDIR)/stage
-
-.PHONY: all
-all: $(TARGET) 
-$(TARGET): xcomp.fs $(STAGE)
-	cat xcomp.fs | $(STAGE) > $@
-
-$(STAGE):
-	$(MAKE) -C $(EDIR) stage
-

recipes/z80mbc2/README.md

@@ -1,54 +0,0 @@
-# Z80-MBC2
-
-The [Z80-MBC2][link] combines a Z80 and an ATMEGA32A to provide a CP/m capable
-computing environment. It features a SD card bootloader which makes running
-Collapse OS on it rather simple.
-
-## Recipe
-
-In this recipe, we're going to run Collapse OS on the Z80-MBC2, interfacing
-through its serial port. We're going to use the MBC's API to implement BLK on
-the SD card.
-
-### Gathering parts
-
-* A Z80-MBC2 computer with its SD card module and a properly flashed "IOS" on
-  the ATMega32A.
-* A FTDI-to-TTL cable to connect to the serial port.
-
-### Building the binary
-
-Running `make` will yield `os.bin` which is what we want.
-
-### Running on the Z80-MBC2
-
-Mount the SD card on your modern computer and copy `os.bin` as `autoboot.bin`,
-overwriting the binary that was previously there.
-
-We also have to copy the blkfs over. This is done by using IOS' drive system.
-Each `DSxNyy.DSK` file on the card is a drive, each drive has 512 track of 32
-sectors of 512 bytes, so one drive is plenty for our needs. Collapse OS
-hardcodes drive 0.
-
-Each drive is part of a set. IOS theoretically supports up to 10 sets, but the
-binary shipped by default only accepts 4. You have to overwrite an existing set.
-I used set 3. So, copy `blkfs` to file `DS3N00.DSK`. If you want, you can change
-the name of the set by changing the contents of `DS3NAM.DAT`.
-
-Put back the SD card in the Z80-MBC2 and power it up by connecting the FTDI
-adapter to it (red: VCC, black: GND, green: TX, white: RX).
-
-The FTDI adapter will show up as something like `ttyUSB0` (or `ttyU0` on
-OpenBSD). Connect to it with `screen` or `cu` or whatever you like. Baud rate of
-the Z80-MBC2 appears to be hardcoded to 115200.
-
-Then, enable IOS program selection by holding RESET and USER at the same time,
-wait 2 seconds, releasing RESET, wait 2 seconds, releasing USER. You should then
-be given a 1-8 choice.
-
-You begin by selecting the proper disk set, which is through choice 8, then you
-select the Autoboot binary through choice 4.
-
-You are now in Collapse OS.
-
-[link]: https://hackaday.io/project/159973-z80-mbc2-a-4-ics-homebrew-z80-computer

recipes/z80mbc2/xcomp.fs

@@ -1,39 +0,0 @@
-0xff00 CONSTANT RS_ADDR        0xfffa CONSTANT PS_ADDR
-RS_ADDR 0x80 - CONSTANT RAMSTART
-212 LOAD  ( z80 assembler )
-262 LOAD  ( xcomp )            270 LOAD  ( xcomp overrides )
-282 LOAD  ( boot.z80 )         353 LOAD  ( xcomp core low )
-CODE (emit)
-    A 1 LDrn, 1 OUTnA, HL POPqq, A L LDrr, 0 OUTnA,
-;CODE
-CODE (key)
-    BEGIN, 1 INAn, A INCr, JRZ, AGAIN,
-    A DECr, PUSHA,
-;CODE
-: _sel ( sec )
-( 32 sectors per track, 512 tracks per disk )
-    32 /MOD ( addr sec trk )
-    0x0a ( seltrk ) 1 PC! 0 PC! 0 0 PC! ( addr sec )
-    0x0b ( selsec ) 1 PC! 0 PC! ( addr ) ;
-: _ ( addr )
-    ( get 512 bytes )
-    0x86 ( readsec ) 1 PC!
-    512 0 DO 0 PC@ SWAP C!+ LOOP DROP
-;
-: FD@ 2 * DUP _sel BLK( _ 1+ _sel BLK( 512 + _ ;
-: _ ( addr )
-    ( write 512 bytes )
-    0x0c ( writesec ) 1 PC!
-    512 0 DO C@+ 0 PC! LOOP DROP
-;
-: FD! 2 * DUP _sel BLK( _ 1+ _sel BLK( 512 + _ ;
-: FD$ ( select disk 0 )
-    0x09 ( seldisk ) 1 PC! 0 0 PC! ( sel disk 0 )
-;
-380 LOAD  ( xcomp core high )
-(entry) _
-( Update LATEST )
-PC ORG @ 8 + !
-," CURRENT @ HERE ! BLK$ FD$ ' FD@ BLK@* ! ' FD! BLK!* ! " EOT,
-ORG @ 256 /MOD 2 PC! 2 PC!
-H@ 256 /MOD 2 PC! 2 PC!