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apple2: Sider updates [Peter Ferrie, R. Belmont]

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- Renamed cards.  The card we were calling "Xebec" was actually the Sider 1,
  which used 256 byte blocks and a special on-disk format.
- Removed ROM patches for the Sider 1 card.
- Included source of short program to convert standard disk images to Sider 2
  format.
This commit is contained in:
arbee 2020-09-22 21:54:33 -04:00
parent 7f281a9d95
commit ddad73176b
4 changed files with 70 additions and 57 deletions
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101
src/devices/bus/a2bus/sider.cpp
View File

@ -4,10 +4,55 @@
sider.cpp
Implementation of the First Class Peripherals / Advanced Tech Services / Xebec SASI Card
Implementation of the First Class Peripherals / Advanced Tech Services / Xebec Sider cards
The original card was by Xebec; the Sider's relationship with Xebec is not clear, but
the Sider version of the firmware is quite different (and much more compact).
Sider 1: based on Xebec SASI hardware, with Xebec firmware. Requires HDD with 256 byte sectors
and special formatting - not compatible with standard .po/.hdv type images.
Sider 2: Same hardware, new firmware that's fully ProDOS compliant including 512 byte sectors.
Sectors are interleaved: the first byte is the byte that would be at 0, the second byte is the byte that would be at $100,
the third is the byte at $1, the fourth at $101, and so on. So this is also not compatible with standard images.
This command-line program will convert a standard image to work with Sider 2. First parameter is the input filename,
second parameter is the output filename. No error checking is done, if the input file doesn't exist it'll probably crash.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static char block[512];
static char blockout[512];
int main(int argc, char *argv[])
{
FILE *in, *out;
in = fopen(argv[1], "rb");
out = fopen(argv[2], "wb");
int len = 0;
fseek(in, 0, SEEK_END);
len = ftell(in);
fseek(in, 0, SEEK_SET);
for (int bnum = 0; bnum < (len / 512); bnum++)
{
fread(block, 512, 1, in);
for (int byte = 0; byte < 256; byte++)
{
blockout[byte*2] = block[byte];
blockout[(byte*2)+1] = block[byte+256];
}
fwrite(blockout, 512, 1, out);
printf("block %d\n", bnum);
}
fclose(out);
fclose(in);
return 0;
}
--------------------------------------
$C0(n+8)X space:
$0: read state / write latch
@ -41,17 +86,17 @@
// GLOBAL VARIABLES
//**************************************************************************
DEFINE_DEVICE_TYPE(A2BUS_SIDER, a2bus_sidercard_device, "a2sider", "First Class Peripherals Sider SASI Card")
DEFINE_DEVICE_TYPE(A2BUS_XEBEC, a2bus_xebeccard_device, "a2xebec", "Xebec SASI Card")
DEFINE_DEVICE_TYPE(A2BUS_SIDER2, a2bus_sider2card_device, "a2sider2", "First Class Peripherals Sider 2 SASI Card")
DEFINE_DEVICE_TYPE(A2BUS_SIDER1, a2bus_sider1card_device, "a2sider1", "First Class Peripherals Sider 1 SASI Card")
#define SASI_ROM_REGION "sasi_rom"
ROM_START( sider )
ROM_START( sider2 )
ROM_REGION(0x800, SASI_ROM_REGION, 0)
ROM_LOAD( "atsv22_a02a9baad2262a8a49ecea843f602124.bin", 0x000000, 0x000800, CRC(97773a0b) SHA1(8d0a5d6ce3b9a236771126033c4aba6c0cc5e704) )
ROM_END
ROM_START( xebec )
ROM_START( sider1 )
ROM_REGION(0x800, SASI_ROM_REGION, 0)
ROM_LOAD( "xebec-103684c-1986.bin", 0x000000, 0x000800, CRC(9e62e15f) SHA1(7f50b5e00cac4960204f50448a6e2d623b1a41e2) )
ROM_END
@ -81,14 +126,14 @@ void a2bus_sider_device::device_add_mconfig(machine_config &config)
// rom_region - device-specific ROM region
//-------------------------------------------------
const tiny_rom_entry *a2bus_sidercard_device::device_rom_region() const
const tiny_rom_entry *a2bus_sider2card_device::device_rom_region() const
{
return ROM_NAME( sider );
return ROM_NAME( sider2 );
}
const tiny_rom_entry *a2bus_xebeccard_device::device_rom_region() const
const tiny_rom_entry *a2bus_sider1card_device::device_rom_region() const
{
return ROM_NAME( xebec );
return ROM_NAME( sider1 );
}
//**************************************************************************
@ -106,13 +151,13 @@ a2bus_sider_device::a2bus_sider_device(const machine_config &mconfig, device_typ
{
}
a2bus_sidercard_device::a2bus_sidercard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
a2bus_sider_device(mconfig, A2BUS_SIDER, tag, owner, clock)
a2bus_sider2card_device::a2bus_sider2card_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
a2bus_sider_device(mconfig, A2BUS_SIDER2, tag, owner, clock)
{
}
a2bus_xebeccard_device::a2bus_xebeccard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
a2bus_sider_device(mconfig, A2BUS_XEBEC, tag, owner, clock)
a2bus_sider1card_device::a2bus_sider1card_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
a2bus_sider_device(mconfig, A2BUS_SIDER1, tag, owner, clock)
{
}
@ -132,32 +177,6 @@ void a2bus_sider_device::device_reset()
m_control = 0;
}
void a2bus_xebeccard_device::device_start()
{
a2bus_sider_device::device_start();
m_rom[0x42] = 0x01; // correct boot block jump to $801
m_rom[0x492] = 0x01; // correct ProDOS READ_BLOCK to read one block, not two
m_rom[0x497] = 0xea; // fix various weird stuff done to the READ_BLOCK parameters
m_rom[0x498] = 0xea;
m_rom[0x499] = 0xea;
m_rom[0x49a] = 0xea;
m_rom[0x49b] = 0xea;
m_rom[0x49c] = 0xea;
m_rom[0x4b4] = 0xea;
m_rom[0x4b5] = 0xea;
m_rom[0x4b9] = 0xea;
m_rom[0x4ba] = 0xea;
m_rom[0x4bf] = 0xea;
m_rom[0x4c0] = 0xea;
m_rom[0x4c7] = 0xea;
m_rom[0x4c8] = 0xea;
m_rom[0x4c9] = 0xea;
m_rom[0x4ca] = 0xea;
m_rom[0x4cb] = 0xea;
m_rom[0x4cc] = 0xea;
}
/*-------------------------------------------------
read_c0nx - called for reads from this card's c0nx space
-------------------------------------------------*/

18
src/devices/bus/a2bus/sider.h
View File

@ -50,28 +50,22 @@ private:
u8 m_control;
};
class a2bus_sidercard_device: public a2bus_sider_device
class a2bus_sider2card_device: public a2bus_sider_device
{
public:
a2bus_sidercard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
a2bus_sider2card_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual const tiny_rom_entry *device_rom_region() const override;
};
class a2bus_xebeccard_device: public a2bus_sider_device
class a2bus_sider1card_device: public a2bus_sider_device
{
public:
a2bus_xebeccard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
a2bus_sider1card_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual const tiny_rom_entry *device_rom_region() const override;
// the Xebec version of the firmware doesn't work; it appears to have some bytes corrupted.
static constexpr feature_type unemulated_features() { return feature::DISK; }
protected:
virtual void device_start() override;
};
// device type definition
DECLARE_DEVICE_TYPE(A2BUS_SIDER, a2bus_sidercard_device)
DECLARE_DEVICE_TYPE(A2BUS_XEBEC, a2bus_xebeccard_device)
DECLARE_DEVICE_TYPE(A2BUS_SIDER2, a2bus_sider2card_device)
DECLARE_DEVICE_TYPE(A2BUS_SIDER1, a2bus_sider1card_device)
#endif // MAME_BUS_A2BUS_SIDER_H

4
src/mame/drivers/apple2e.cpp
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@ -4503,8 +4503,8 @@ static void apple2_cards(device_slot_interface &device)
device.option_add("byte8251", A2BUS_BYTE8251); /* BYTE Magazine 8251 serial card */
device.option_add("cmsscsi", A2BUS_CMSSCSI); /* CMS Apple II SCSI Card */
device.option_add("uthernet", A2BUS_UTHERNET); /* A2RetroSystems Uthernet card */
device.option_add("sider", A2BUS_SIDER); /* First Class Peripherals / Advanced Tech Systems Sider SASI card */
device.option_add("xebec", A2BUS_XEBEC); /* Xebec SASI card */
device.option_add("sider2", A2BUS_SIDER2); /* Advanced Tech Systems / First Class Peripherals Sider 2 SASI card */
device.option_add("sider1", A2BUS_SIDER1); /* Advanced Tech Systems / First Class Peripherals Sider 1 SASI card */
}
static void apple2eaux_cards(device_slot_interface &device)

4
src/mame/drivers/apple2gs.cpp
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@ -4583,8 +4583,8 @@ static void apple2_cards(device_slot_interface &device)
// device.option_add("ramfast", A2BUS_RAMFAST); /* C.V. Technologies RAMFast SCSI card */
device.option_add("cmsscsi", A2BUS_CMSSCSI); /* CMS Apple II SCSI Card */
device.option_add("uthernet", A2BUS_UTHERNET); /* A2RetroSystems Uthernet card */
device.option_add("sider", A2BUS_SIDER); /* Advanced Tech Systems / First Class Peripherals Sider SASI card */
device.option_add("xebec", A2BUS_XEBEC); /* Xebec SASI card */
device.option_add("sider2", A2BUS_SIDER2); /* Advanced Tech Systems / First Class Peripherals Sider 2 SASI card */
device.option_add("sider1", A2BUS_SIDER1); /* Advanced Tech Systems / First Class Peripherals Sider 1 SASI card */
}
void apple2gs_state::apple2gs(machine_config &config)