SWTPC 6800 Computer System (with MIKBUG) - mame (0280) machine

MAME: 0280 - Released: 2025-08-29T22:26:57 - Lists: 731 - Software: 139884 - rom: 235974 - disk: 11384

machine

• XML • JSON • AO

name	sourcefile	sampleof	isbios	isdevice	ismechanical	runnable	description	year	manufacturer	cloneof	romof
swtpcm	swtpc/swtpc.cpp		no	no	no	yes	SWTPC 6800 Computer System (with MIKBUG)	1975	Southwest Technical Products Corporation	swtpc	swtpc

display

tag	type	rotate	width	height	refresh	pixclock	htotal	hbend	hbstart	vtotal	vbend	vbstart	flipx
io1:mpc:rs232:terminal:terminal_screen	raster	0	640	240	50.000000								no

driver

status	emulation	savestate	requiresartwork	unofficial	nosoundhardware	incomplete	cocktail
good	good	unsupported	no	no	yes	no

rom

name	size	crc	sha1	region	offset	status	optional	merge	bios
mikbug.bin	1024	e7f4d9d0	5ad585218f9c9c70f38b3c74e3ed5dfe0357621c	mcm6830	0	good	no

chip

type	tag	name	clock
cpu	maincpu	Motorola MC6800	898550
audio	io1:mpc:rs232:terminal:bell	Speaker
audio	io1:mpc:rs232:terminal:beeper	Beep	2000
audio	io5:dc5:fdc:0:sssd35:flopsndout	Speaker
audio	io5:dc5:fdc:0:sssd35:floppysound	Floppy sound	44100
audio	io5:dc5:fdc:1:sssd35:flopsndout	Speaker
audio	io5:dc5:fdc:1:sssd35:floppysound	Floppy sound	44100
audio	io5:dc5:fdc:2:sssd35:flopsndout	Speaker
audio	io5:dc5:fdc:2:sssd35:floppysound	Floppy sound	44100
audio	io5:dc5:fdc:3:sssd35:flopsndout	Speaker
audio	io5:dc5:fdc:3:sssd35:floppysound	Floppy sound	44100

device_ref

name
m6800
mc14411
ss50_interface
ss50_interface
ss50_mpc
pia6821
rs232
serial_terminal
screen
generic_keyboard
speaker
beep
ipt_merge_all_hi
ipt_merge_any_hi
ripple_counter
ss50_interface
ss50_interface
ss50_interface
ss50_mpt
pia6821
ss50_interface
ss50_dc5
wd2797
floppy_connector
floppy_525_sssd_35t
speaker
flopsnd
floppy_connector
floppy_525_sssd_35t
speaker
flopsnd
floppy_connector
floppy_525_sssd_35t
speaker
flopsnd
floppy_connector
floppy_525_sssd_35t
speaker
flopsnd
ss50_interface
ss50_interface
ipt_merge_any_hi
ipt_merge_any_hi
ram

sound

channels
5

ramoption

name	default
4K
8K
12K
16K
20K
24K
28K
32K	yes

device, instance

type	tag	interface	name	briefname
floppydisk	io5:dc5:fdc:0:sssd35	floppy_5_25	floppydisk1	flop1
floppydisk	io5:dc5:fdc:1:sssd35	floppy_5_25	floppydisk2	flop2
floppydisk	io5:dc5:fdc:2:sssd35	floppy_5_25	floppydisk3	flop3
floppydisk	io5:dc5:fdc:3:sssd35	floppy_5_25	floppydisk4	flop4

device, extension

type	tag	interface	extension_names
floppydisk	io5:dc5:fdc:0:sssd35	floppy_5_25	mfi, dfi, mfm, td0, imd, 86f, d77, d88, 1dd, cqm, cqi, dsk, os9
floppydisk	io5:dc5:fdc:1:sssd35	floppy_5_25	mfi, dfi, mfm, td0, imd, 86f, d77, d88, 1dd, cqm, cqi, dsk, os9
floppydisk	io5:dc5:fdc:2:sssd35	floppy_5_25	mfi, dfi, mfm, td0, imd, 86f, d77, d88, 1dd, cqm, cqi, dsk, os9
floppydisk	io5:dc5:fdc:3:sssd35	floppy_5_25	mfi, dfi, mfm, td0, imd, 86f, d77, d88, 1dd, cqm, cqi, dsk, os9

input

players	coins	service	tilt
1		no	no

control

type	player	buttons	ways	reverse	minimum	maximum	sensitivity	keydelta	ways2	ways3	reqbuttons
keyboard		73		no

port, analog

port_tag	analog_masks
:MAINCPU_CLOCK
:SWTBUG_LOAD_AT_A100
:io1:mpc:BAUD
:io1:mpc:STOP
:io1:mpc:rs232:terminal:RS232_DATABITS
:io1:mpc:rs232:terminal:RS232_PARITY
:io1:mpc:rs232:terminal:RS232_RXBAUD
:io1:mpc:rs232:terminal:RS232_STOPBITS
:io1:mpc:rs232:terminal:RS232_TXBAUD
:io1:mpc:rs232:terminal:TERM_CONF
:io1:mpc:rs232:terminal:keyboard:GENKBD_CFG
:io1:mpc:rs232:terminal:keyboard:GENKBD_MOD
:io1:mpc:rs232:terminal:keyboard:GENKBD_ROW0
:io1:mpc:rs232:terminal:keyboard:GENKBD_ROW1
:io1:mpc:rs232:terminal:keyboard:GENKBD_ROW2
:io1:mpc:rs232:terminal:keyboard:GENKBD_ROW3
:io4:mpt:IRQA
:io4:mpt:IRQB
:io5:dc5:ADDRESS_MODE
:io5:dc5:CTRL_REG_BIT7_SIDE_SELECT
:io5:dc5:EXPECTED_CLOCK
:io5:dc5:EXPECTED_DENSITY
:io5:dc5:EXPECTED_SECTORS
:io5:dc5:FORCE_READY
:io5:dc5:INTERRUPT_SELECT
:io5:dc5:TRACK_ZERO_EXPECTED_SECTORS
:io5:dc5:TWO_CONTROL_REGS

slot, slotoption

slot_name	slotoption_name	slotoption_devname	slotoption_default
io0	mpt	ss50_mpt	no
io0	mps	ss50_mps	no
io0	mpc	ss50_mpc	no
io0	piaide	ss50_piaide	no
io0	mps2	ss50_mps2	no
io0	dc5	ss50_dc5	no
io1	mpt	ss50_mpt	no
io1	mps	ss50_mps	no
io1	mpc	ss50_mpc	yes
io1	piaide	ss50_piaide	no
io1	mps2	ss50_mps2	no
io1	dc5	ss50_dc5	no
io1:mpc:rs232	terminal	serial_terminal	yes
io1:mpc:rs232	sunkbd	sunkbd_adaptor	no
io1:mpc:rs232	dec_loopback	dec_rs232_loopback	no
io1:mpc:rs232	ie15	ie15_terminal	no
io1:mpc:rs232	null_modem	null_modem	no
io1:mpc:rs232	keyboard	serial_keyboard	no
io1:mpc:rs232	patch	rs232_patch_box	no
io1:mpc:rs232	swtpc8212	swtpc8212_terminal	no
io1:mpc:rs232	printer	serial_printer	no
io1:mpc:rs232	scorpion	scorpion_ic	no
io1:mpc:rs232	loopback	rs232_loopback	no
io1:mpc:rs232	mockingboard	mockingboardd	no
io1:mpc:rs232	msystems_mouse	rs232_mouse_hle_msystems	no
io1:mpc:rs232	nss_tvi	nss_tvinterface	no
io1:mpc:rs232	rs232_sync_io	rs232_sync_io	no
io1:mpc:rs232	pty	pseudo_terminal	no
io1:mpc:rs232	votraxtnt	serial_votraxtnt	no
io1:mpc:rs232	rs_printer	rs_serial_printer	no
io2	mpt	ss50_mpt	no
io2	mps	ss50_mps	no
io2	mpc	ss50_mpc	no
io2	piaide	ss50_piaide	no
io2	mps2	ss50_mps2	no
io2	dc5	ss50_dc5	no
io3	mpt	ss50_mpt	no
io3	mps	ss50_mps	no
io3	mpc	ss50_mpc	no
io3	piaide	ss50_piaide	no
io3	mps2	ss50_mps2	no
io3	dc5	ss50_dc5	no
io4	mpt	ss50_mpt	yes
io4	mps	ss50_mps	no
io4	mpc	ss50_mpc	no
io4	piaide	ss50_piaide	no
io4	mps2	ss50_mps2	no
io4	dc5	ss50_dc5	no
io5	mpt	ss50_mpt	no
io5	mps	ss50_mps	no
io5	mpc	ss50_mpc	no
io5	piaide	ss50_piaide	no
io5	mps2	ss50_mps2	no
io5	dc5	ss50_dc5	yes
io5:dc5:fdc:0	8ssdd	floppy_8_ssdd	no
io5:dc5:fdc:0	8dssd	floppy_8_dssd	no
io5:dc5:fdc:0	8dsdd	floppy_8_dsdd	no
io5:dc5:fdc:0	ssqd	floppy_525_ssqd	no
io5:dc5:fdc:0	8sssd	floppy_8_sssd	no
io5:dc5:fdc:0	ssdd	floppy_525_ssdd	no
io5:dc5:fdc:0	dssd	floppy_525_sd	no
io5:dc5:fdc:0	qd	floppy_525_qd	no
io5:dc5:fdc:0	dssd35	floppy_525_sd_35t	no
io5:dc5:fdc:0	35hd	floppy_35_hd	no
io5:dc5:fdc:0	dd	floppy_525_dd	no
io5:dc5:fdc:0	sssd	floppy_525_sssd	no
io5:dc5:fdc:0	sssd35	floppy_525_sssd_35t	yes
io5:dc5:fdc:1	8ssdd	floppy_8_ssdd	no
io5:dc5:fdc:1	8dssd	floppy_8_dssd	no
io5:dc5:fdc:1	8dsdd	floppy_8_dsdd	no
io5:dc5:fdc:1	ssqd	floppy_525_ssqd	no
io5:dc5:fdc:1	8sssd	floppy_8_sssd	no
io5:dc5:fdc:1	ssdd	floppy_525_ssdd	no
io5:dc5:fdc:1	dssd	floppy_525_sd	no
io5:dc5:fdc:1	qd	floppy_525_qd	no
io5:dc5:fdc:1	dssd35	floppy_525_sd_35t	no
io5:dc5:fdc:1	35hd	floppy_35_hd	no
io5:dc5:fdc:1	dd	floppy_525_dd	no
io5:dc5:fdc:1	sssd	floppy_525_sssd	no
io5:dc5:fdc:1	sssd35	floppy_525_sssd_35t	yes
io5:dc5:fdc:2	8ssdd	floppy_8_ssdd	no
io5:dc5:fdc:2	8dssd	floppy_8_dssd	no
io5:dc5:fdc:2	8dsdd	floppy_8_dsdd	no
io5:dc5:fdc:2	ssqd	floppy_525_ssqd	no
io5:dc5:fdc:2	8sssd	floppy_8_sssd	no
io5:dc5:fdc:2	ssdd	floppy_525_ssdd	no
io5:dc5:fdc:2	dssd	floppy_525_sd	no
io5:dc5:fdc:2	qd	floppy_525_qd	no
io5:dc5:fdc:2	dssd35	floppy_525_sd_35t	no
io5:dc5:fdc:2	35hd	floppy_35_hd	no
io5:dc5:fdc:2	dd	floppy_525_dd	no
io5:dc5:fdc:2	sssd	floppy_525_sssd	no
io5:dc5:fdc:2	sssd35	floppy_525_sssd_35t	yes
io5:dc5:fdc:3	8ssdd	floppy_8_ssdd	no
io5:dc5:fdc:3	8dssd	floppy_8_dssd	no
io5:dc5:fdc:3	8dsdd	floppy_8_dsdd	no
io5:dc5:fdc:3	ssqd	floppy_525_ssqd	no
io5:dc5:fdc:3	8sssd	floppy_8_sssd	no
io5:dc5:fdc:3	ssdd	floppy_525_ssdd	no
io5:dc5:fdc:3	dssd	floppy_525_sd	no
io5:dc5:fdc:3	qd	floppy_525_qd	no
io5:dc5:fdc:3	dssd35	floppy_525_sd_35t	no
io5:dc5:fdc:3	35hd	floppy_35_hd	no
io5:dc5:fdc:3	dd	floppy_525_dd	no
io5:dc5:fdc:3	sssd	floppy_525_sssd	no
io5:dc5:fdc:3	sssd35	floppy_525_sssd_35t	yes
io6	mpt	ss50_mpt	no
io6	mps	ss50_mps	no
io6	mpc	ss50_mpc	no
io6	piaide	ss50_piaide	no
io6	mps2	ss50_mps2	no
io6	dc5	ss50_dc5	no
io7	mpt	ss50_mpt	no
io7	mps	ss50_mps	no
io7	mpc	ss50_mpc	no
io7	piaide	ss50_piaide	no
io7	mps2	ss50_mps2	no
io7	dc5	ss50_dc5	no

configuration

CPU clock

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
CPU clock	MAINCPU_CLOCK	16777215

setting

name	value	default
0.89855 MHz	898550	no
0.92160 MHz	921600	no
1.0 MHz	1000000	yes
2.0 MHz	2000000	no
4.0 MHz	4000000	no

SWTBUG disk boot patch, to load at 0xa100

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
SWTBUG disk boot patch, to load at 0xa100	SWTBUG_LOAD_AT_A100	1

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
No	0	no
Yes - apply patch	1	yes

Data Bits

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Data Bits	io1:mpc:rs232:terminal:RS232_DATABITS	255

setting

name	value	default
5	0	no
6	1	no
7	2	no
8	3	yes

Parity

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Parity	io1:mpc:rs232:terminal:RS232_PARITY	255

setting

name	value	default
None	0	yes
Odd	1	no
Even	2	no
Mark	3	no
Space	4	no

RX Baud

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
RX Baud	io1:mpc:rs232:terminal:RS232_RXBAUD	255

setting

name	value	default
50	14	no
75	15	no
110	0	no
134.5	16	no
150	1	no
200	17	no
300	2	yes
600	3	no
1200	4	no
1800	18	no
2000	19	no
2400	5	no
3600	20	no
4800	6	no
7200	21	no
9600	7	no
14400	8	no
19200	9	no
28800	10	no
38400	11	no
57600	12	no
111900	22	no
115200	13	no

Stop Bits

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Stop Bits	io1:mpc:rs232:terminal:RS232_STOPBITS	255

setting

name	value	default
0	0	no
1	1	yes
1.5	2	no
2	3	no

TX Baud

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
TX Baud	io1:mpc:rs232:terminal:RS232_TXBAUD	255

setting

name	value	default
50	14	no
75	15	no
110	0	no
134.5	16	no
150	1	no
200	17	no
300	2	yes
600	3	no
1200	4	no
1800	18	no
2000	19	no
2400	5	no
3600	20	no
4800	6	no
7200	21	no
9600	7	no
14400	8	no
19200	9	no
28800	10	no
38400	11	no
57600	12	no
111900	22	no
115200	13	no

Cursor

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Cursor	io1:mpc:rs232:terminal:TERM_CONF	1

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
No	0	no
Yes	1	yes

Type

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Type	io1:mpc:rs232:terminal:TERM_CONF	2

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Underline	0	no
Block	2	yes

Blinking

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Blinking	io1:mpc:rs232:terminal:TERM_CONF	4

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
No	0	no
Yes	4	yes

Invert

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Invert	io1:mpc:rs232:terminal:TERM_CONF	8

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
No	0	no
Yes	8	yes

Color

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Color	io1:mpc:rs232:terminal:TERM_CONF	48

setting

name	value	default
Green	0	yes
Amber	16	no
White	32	no

Auto CR on LF

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Auto CR on LF	io1:mpc:rs232:terminal:TERM_CONF	64

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
No	0	no
Yes	64	yes

Auto LF on CR

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Auto LF on CR	io1:mpc:rs232:terminal:TERM_CONF	128

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
No	0	yes
Yes	128	no

Local echo

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Local echo	io1:mpc:rs232:terminal:TERM_CONF	256

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
No	0	yes
Yes	256	no

Layout

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Layout	io1:mpc:rs232:terminal:keyboard:GENKBD_CFG	1

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
ANSI	0	yes
JIS	1	no

Typematic Delay

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Typematic Delay	io1:mpc:rs232:terminal:keyboard:GENKBD_CFG	6

setting

name	value	default
0.25s	0	no
0.5s	2	no
0.75s	4	yes
1.0s	6	no

Typematic Rate

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Typematic Rate	io1:mpc:rs232:terminal:keyboard:GENKBD_CFG	248

setting

name	value	default
2.0cps	0	no
2.1cps	8	no
2.5cps	16	no
2.7cps	24	no
2.0cps	32	no
2.1cps	40	no
2.5cps	48	no
2.7cps	56	no
3.3cps	64	no
3.8cps	72	no
4.0cps	80	no
4.3cps	88	no
4.6cps	96	no
5.0cps	104	no
5.5cps	112	no
6.0cps	120	no
8.0cps	128	no
8.6cps	136	no
9.2cps	144	no
10.0cps	152	yes
10.9cps	160	no
12.0cps	168	no
13.3cps	176	no
15.0cps	184	no
16.0cps	192	no
17.1cps	200	no
18.5cps	208	no
20.0cps	216	no
21.8cps	224	no
24.0cps	232	no
26.7cps	240	no
30.0cps	248	no

Control register bit 7

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Control register bit 7	io5:dc5:CTRL_REG_BIT7_SIDE_SELECT	1

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Inhibits drive selection	0	yes
Erroneous side select	1	no

FDC expected clock rate

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
FDC expected clock rate	io5:dc5:EXPECTED_CLOCK	15

setting

name	value	default
-	0	yes
1.0 MHz	12	no
1.2 MHz	10	no
2.0 MHz	6	no
2.4 MHz	5	no

Expected density

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Expected density	io5:dc5:EXPECTED_DENSITY	7

setting

name	value	default
-	0	yes
single density	1	no
double density, with single density track zero head zero	2	no
double density, with single density track zero all heads	3	no
double density	4	no

FLEX expected sectors per side

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
FLEX expected sectors per side	io5:dc5:EXPECTED_SECTORS	255

setting

name	value	default
-	0	yes
10	10	no
15	15	no
16	16	no
18	18	no
26	26	no
36	36	no

Force ready

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Force ready	io5:dc5:FORCE_READY	1

setting

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
No	0	no
Yes	1	yes

FLEX track zero expected sectors per side

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
FLEX track zero expected sectors per side	io5:dc5:TRACK_ZERO_EXPECTED_SECTORS	255

setting

name	value	default
-	0	yes
10	10	no
15	15	no
16	16	no
18	18	no
26	26	no
36	36	no

dipswitch

Baud Rate

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Baud Rate	io1:mpc:BAUD	1

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
110	1	no
300	0	yes

Stop Bits

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Stop Bits	io1:mpc:STOP	1

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
1	0	yes
2	1	no

IRQ-A

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
IRQ-A	io4:mpt:IRQA	1

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	1	no

IRQ-B

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
IRQ-B	io4:mpt:IRQB	1

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	no
On	1	yes

Address mode

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Address mode	io5:dc5:ADDRESS_MODE	1

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
4 address	0	yes
16 address	1	no

Interrupt select

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Interrupt select	io5:dc5:INTERRUPT_SELECT	3

value

name	value	default
N/C	0	yes
IRQ	1	no
NMI/FIRQ	2	no

Two control registers

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Two control registers	io5:dc5:TWO_CONTROL_REGS	1

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
No, DC4 compatible	0	yes
Yes, DC5 extension	1	no