Miscellaneous

- Update romldr to stop using address space >= 0xA000
- ZZRCC work in progress (not finished)

Source/HBIOS/romldr.asm

@@ -2084,6 +2084,30 @@ newcon		.db	0
 newspeed	.db	0
 ;
 ;=======================================================================
+; Working data storage
+;=======================================================================
+;
+		.fill	64,0		; 32 level stack
+bl_stack	.equ	$		; ... top is here
+;
+#if (BIOS == BIOS_WBW)
+bid_ldr		.db	0		; bank at startup
+#endif
+#if (BIOS == BIOS_UNA)
+bid_ldr		.dw	0		; bank at startup
+#endif
+;
+lba		.fill	4,0		; lba for load, dword
+dma		.dw	0		; address for load
+sps		.dw	0		; sectors per slice
+mediaid		.db	0		; media id
+;
+ra_tbl_loc	.dw	0		; points to active ra_tbl
+bootunit	.db	0		; boot disk unit
+bootslice	.db	0		; boot disk slice
+loadcnt		.db	0		; num disk sectors to load
+;
+;=======================================================================
 ; Pad remainder of ROM Loader
 ;=======================================================================
 ;
@@ -2094,29 +2118,16 @@ slack		.equ	($8000 + LDR_SIZ - $)
 		.echo	slack
 		.echo	" bytes.\n"
 ;
+;
 ;=======================================================================
-; Working data storage (uninitialized)
+; Disk buffers (uninitialized)
 ;=======================================================================
 ;
-		.ds	64		; 32 level stack
-bl_stack	.equ	$		; ... top is here
-;
-#if (BIOS == BIOS_WBW)
-bid_ldr		.ds	1		; bank at startup
-#endif
-#if (BIOS == BIOS_UNA)
-bid_ldr		.ds	2		; bank at startup
-#endif
-;
-lba		.ds	4		; lba for load, dword
-dma		.ds	2		; address for load
-sps		.ds	2		; sectors per slice
-mediaid		.ds	1		; media id
+; Master Boot Record sector is read into area below.
+; Note that this buffer is actually shared with bl_infosec
+; buffer below.
 ;
-ra_tbl_loc	.ds	2		; points to active ra_tbl
-bootunit	.ds	1		; boot disk unit
-bootslice	.ds	1		; boot disk slice
-loadcnt		.ds	1		; num disk sectors to load
+bl_mbrsec	.equ	$
 ;
 ; Boot info sector is read into area below.
 ; The third sector of a disk device is reserved for boot info.
@@ -2144,11 +2155,5 @@ bb_biloc	.ds	2		; loc to patch boot drive info
 bb_cpmloc	.ds	2		; final ram dest for cpm/cbios
 bb_cpmend	.ds	2		; end address for load
 bb_cpment	.ds	2		; CP/M entry point (cbios boot)
-;
-;
-; Master Boot Record sector is read into area below.
-;
-bl_mbrsec	.equ	$
-		.ds	512
 ;
 	.end

Source/ZZR/Build.cmd

@@ -0,0 +1,8 @@
+@echo off
+setlocal
+
+if not exist ..\..\Binary\RCZ280_nat_zzr.rom goto :eof
+
+copy /b zzr_cfldr.bin + zzr_ptbl.bin + zzr_fill_1.bin + zzr_mon.bin + zzr_fill_2.bin + ..\..\Binary\RCZ280_nat_zzr.rom + zzr_fill_3.bin ..\..\Binary\hd1024_zzr_prefix.dat
+
+copy /b ..\..\Binary\hd1024_zzr_prefix.dat + ..\..\Binary\hd1024_cpm22.img + ..\..\Binary\hd1024_zsdos.img + ..\..\Binary\hd1024_nzcom.img + ..\..\Binary\hd1024_cpm3.img + ..\..\Binary\hd1024_zpm3.img + ..\..\Binary\hd1024_ws4.img ..\..\Binary\hd1024_zzr_combo.img

Source/ZZR/Clean.cmd

@@ -0,0 +1,3 @@
+@echo off
+setlocal
+

Source/ZZR/ZZR Disk Layout.txt

@@ -0,0 +1,29 @@
+CF Boot Loader: Sector 0 (bytes 0-255)
+RomWBW Partition Table: Sector 0 (bytes 256-511)
+ZZRCC Monitor: Sectors 0xF8-0xFF (bytes 0x1F000-0x1FFFF)
+RomWBW: Sectors 0x120-0x31F (bytes 0x24000-0x63FFF)
+Start of Slices (0x1E partition): Sector 0x800 (byte 0x100000)
+
+Start	Length	Description
+-------	-------	---------------------------
+0x00000 0x00100	CF Boot Loader
+0x00100 0x00100	RomWBW Partition Table
+0x00200 0x1EE00	Filler
+0x1F000 0x01000	ZZRCC Monitor
+0x20000 0x04000	Filler
+0x24000 0x40000	RomWBW
+0x64000 0x9C000	Filler
+0x100000: Start of slices (partition 0x1E)
+
+Notes
+-----
+
+- At startup CPLD ROM is mapped to Z80 CPU address space 0x0000-0x003F, CPU begins execution at 0x0000
+- CPLD ROM (CF bootstrap mode) reads CF Boot Loader (256B) from start of CF (MBR) to 0xB000 and runs it
+- CF Boot Loader reads ZRC Monitor (4KB) from sectors 0xF8-0xFF of CF to 0xB400 and runs it
+- User sends ZZRCC RomWBW Loader hex file (?KB) at 0x5000, then runs it using G5000
+- User sends RomWBW ROM image (512KB) which is autoexecuted
+
+
+;;- ZZRCC Monitor reads 512KB (RomWBW) from sectors 0x120-0x51F of CF into first 512KB of RAM
+

Source/ver.inc

@@ -2,4 +2,4 @@
 #DEFINE	RMN	1
 #DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.1.1-pre.60"
+#DEFINE BIOSVER	"3.1.1-pre.61"

Source/ver.lib

@@ -3,5 +3,5 @@ rmn	equ	1
 rup	equ	1
 rtp	equ	0
 biosver	macro
-	db	"3.1.1-pre.60"
+	db	"3.1.1-pre.61"
 	endm