Quicklinks

• 9845B/C Option ROMs
• 9835A/B Option ROMs
• 9845A Option ROMs
• 9845 Option ROMs Released by 3rd Party Vendors

Option ROMs

9845B/C Option ROMs

The following table is derived from the ROMREV program on the second 9845B/C System Exerciser Rev. E tape. It shows the part numbers, a short content description, a revision number, the systems they belong to, the number of 10K-ROMs that belong to a complete set, a unique checksum for ROM identification, the memory address and the memory block where the ROM data is located, and a download link for the ROM data if it has already been dumped.

All ROM content provided on this page represents the content as seen by the CPUs. The actual content of the real ROMs can be inverted or striped, depending on the implemented decoder logic (all Option ROMs come in modules with integrated decoders).

The system information is encoded as follows:

B = 9845B with standard monochrome graphics option
T = 9845B with fast monochrome graphics option
C = 9845C with color graphics

Std. LPU = standard hybrid LPU
Fast LPU = bit slice LPU

Note that the address information and the block ID are both in octal notation. 10K (Octal) stands for 8 kWords or 16 kBytes decimal. The checksum is always a decimal integer between -32768 and +32767 and refers to the checksum created with the ROMREV tool (part of the 9845B/C Exerciser Package). Beyond this identification checksum, there is another checksum algorithm, which asserts integrity of the ROM (must calculate to -1 for each ROM).

Example:

• The latest PPU Mass Storage Option ROM Rev. D has the part number 09845-65516 (Option ROM modules have only one single part number). It can be used with any configuration. The ROM set includes 3 x 10K. The address space for this ROM set starts at octal 10K (= word address 10000) of octal block 11 (one of the PPU option ROM blocks) and ends at the the octal word address 37777 of the same block. The checksums for the three consecutive 10K memory regions are 6401, -8986 and -31347.

Part No. (UB/LB)

Description

Rev.

Std. LPU

Fast LPU

Rom Set

Checksum

Addr (oct)

Block (oct)

D/L

B

T

C

B

T

C

09845-65517

GRAPHICS

A

*

*

2

26322

30K

7

"

"

"

13102

40K

7

09845-65517

GRAPHICS

B

*

*

2

26322

30K

7

"

"

"

6161

40K

7

09845-66517

GRAPHICS

C

*

*

2

-10391

30K

7

"

"

"

6161

40K

7

98770-65501

CLR GRAPHICS

A

*

*

4

27021

30K

7

"

"

"

5557

40K

7

"

"

"

27657

50K

7

"

"

"

14218

60K

7

98770-65501

CLR GRAPHICS

B

*

*

4

12529

30K

7

"

"

"

3588

40K

7

"

"

"

29874

50K

7

"

"

"

18282

60K

7

98770-65501

CLR GRAPHICS

D

*

*

4

12529

30K

7

"

"

"

3588

40K

7

"

"

"

29874

50K

7

"

"

"

-13666

60K

7

98780-65501

ENH GRAPHICS

A

*

*

*

*

5

-25606

20K

7

"

"

"

12654

30K

7

"

"

"

3588

40K

7

"

"

"

31504

50K

7

"

"

"

-11207

60K

7

98780-65501

ENH GRAPHICS

B

*

*

*

*

5

-25606

20K

7

"

"

"

12654

30K

7

"

"

"

3588

40K

7

"

"

"

-29502

50K

7

"

"

"

-30284

60K

7

09845-65516

MASS STORAGE

D

*

*

*

*

*

*

3

6401

10K

11

"

"

"

-8986

20K

11

"

"

"

-31347

30K

11

09845-65516

MASS STORAGE

A

*

*

*

*

*

*

2

-11284

10K

11

"

"

"

9154

20K

11

09845-65516

MASS STORAGE

B

*

*

*

*

*

*

2

6401

10K

11

"

"

"

-32000

20K

11

09845-65516

MASS STORAGE

C

*

*

*

*

*

*

2

6401

10K

11

"

"

"

-8986

20K

11

09845-65519

I/O PPU

A

*

*

*

*

*

*

2

0

40K

11

"

"

"

0

50K

11

09845-65519

I/O PPU

B

*

*

*

*

*

*

2

-26054

40K

11

"

"

"

-17517

50K

11

09845-65519

I/O PPU

C

*

*

*

*

*

*

2

-28707

40K

11

"

"

"

-17517

50K

11

09845-65586

RM PPU

A

*

*

*

*

*

*

2

-5924

60K

11

"

"

"

-8370

70K

11

09845-65521

ADV PROG

A

*

*

*

*

*

*

1

-4151

10K

13

09845-65518

I/O LPU

A

*

*

*

*

*

*

2

25916

50K

13

"

"

"

22486

60K

13

09845-65518

I/O LPU

B

*

*

*

*

*

*

2

3586

50K

13

"

"

"

22486

60K

13

09845-65585

RM LPU

A

*

*

*

*

*

*

1

-22571

70K

13

09845-65527

DBM PPU

A

?

?

?

?

?

?

3

18685

50K

15

"

"

"

-21899

60K

15

"

"

"

-12548

70K

15

09845-65527

DBM PPU

B

*

*

*

*

*

*

3

10404

50K

15

"

"

"

-21899

60K

15

"

"

"

-12548

70K

15

09845-65527

DBM PPU

C

*

*

*

*

*

*

3

-6081

50K

15

"

"

"

13955

60K

15

"

"

"

-12548

70K

15

09845-65526

DBM LPU

A

?

?

?

?

?

?

2

-25604

10K

17

"

"

"

593

20K

17

09845-65526

DBM LPU

B

*

*

*

*

*

*

2

13997

10K

17

"

"

"

2308

20K

17

09845-65528

STRUCT PROG

A

*

*

*

*

*

*

1

16803

30K

17

09845-65525

ASSY DEVELOP

A

*

*

*

*

*

*

4

25302

40K

17

"

"

"

-1865

50K

17

"

"

"

-24723

60K

17

"

"

"

-25478

70K

17

09845-65524

ASSY EXECUTE

A

*

*

*

*

*

*

2

25302

40K

17

"

"

"

-1865

50K

17

09845-67965

DATA COM ASYN

A

*

4

17929

0K

21

"

"

"

-20908

10K

21

"

"

"

18533

20K

21

"

"

"

4794

30K

21

09845-67986

DATA COM BISY

A

*

*

*

*

*

*

2

-22245

40K

21

"

"

"

10654

50K

21

09845-65520

TEST ROM

n/a

*

*

*

*

*

*

2

-5339

0K

45

"

"

n/a

-10043

10K

45

The above option ROMs can be downloaded here as complete archive: 9845-Option-ROM-Readouts-090424.zip

9835A/B Option ROMs

All the 9835A ROMs (both the operating system ROMs and the option ROMS), are provided as pluggable ROM modules.

Part No.	Description	Rev.	Checksum	Addr (oct)	Block (oct)	D/L
98331A	Mass Storage 1	A(98331A)	4495	10	5
98331A	Mass Storage 1	B(98331A)	-4610	10	5
98331A	Mass Storage 1	C(98331A)	-24837	10	5
98331B	Mass Storage 1	A(98331B)	14672	10	5
98331B	Mass Storage 2	A(98331B)	-21554	20	5
98332A	I/O 1	A	24900	10	11
98332A	I/O 1	B	25916	10	11
98332A	I/O 2	A	15477	20	11
98332A	I/O 2	B	-17064	20	11
98332A	I/O 3	A	-20476	30	11
98332A	I/O 3	B	-24196	30	11
98332A	I/O 4	A	21540	40	11
98332A	I/O 4	B	-10605	40	11
98335A	Structured Programming	A	19015	20	13
98336A	Advanced Programming	A	-18605	10	13
98337A	Plotter 1	A/C	4613	60	7
98337A	Plotter 2	A/B	26936	70	7
98338A	Assembly Execution	A	9116	50	13
98338A	Assembly Execution	A2	13452	50	13
98339A	Assembly Language Development & Execution 1	B	16476	60	13
98339A	Assembly Language Development & Execution 1	B2	-25164	60	13
98339A	Assembly Language Development & Execution 2	B	-4641	70	13
98339A	Assembly Language Development & Execution 2*	B2	-4641	70	13
98317A	Basic Datacomm 1	A	30129	00	21
98317A	Basic Datacomm 2	A	14919	10	21
98317A	Basic Datacomm 3	A	27003	20	21
98317A	Basic Datacomm 4	A	18138	30	21
98318A	Bisync Datacomm 1	A	29571	40	21
98318A	Bisync Datacomm 2	A	648	50	21
	9835 CE Test ROM	A	22710	00	45

*The Asy Dev & Exec 2 ROM dump does not report consistency, however the checksum matches and there have not been any problems with this ROM yet.

The above option ROMs can be downloaded here as complete archive: 9835-Option-ROM-Readouts-150809.zip

9845A Option ROMs

Just like the 9835 ROMs, both the operating system ROMs and the option ROMS are provided as pluggable ROM modules. The ROM drawer of the 9845A is different than that of the 9845B/C and can't be exchanged.

Please note that all LPU option ROMs are located in option ROM block 2, whereas PPU option ROMs are mapped into PPU ROM block 1 at address octal 46000-65777 (9845A PPU can only access memory block 1).

Part No. (UB/LB)	Description	Rev.	Checksum	Addr (oct)	Block (oct)	D/L
09845-65531	Mass Storage	A	n/a	46-60K	1
09845-65532	I/O LPU	A	n/a	40-60K	2
09845-65533	I/O PPU	A	n/a	60-66K	1
09845-65537	GRAPHICS	A	n/a	60-80K	2
09845-65540	Test ROM LPU	A	n/a	?	1
09845-65541	Test ROM PPU	A	n/a	?	?

9845 Option ROMs Released by 3rd Party Vendors

The following table shows the same information for third party ROMs.

Manufacturer	Description	Rev.	Rom Set	Checksum	Addr (oct)	Block (oct)	D/L
Structured Software Systems	Mass Storage	A (831010)	1	-24459	10K	15
Structured Software Systems	Mass Storage	B (841010)	2	-28515	10K	15
"	"	"		14378	20K	15
Structured Software Systems	Mass Storage	B (851205)	2	30661	10K	15
"	"	"		01587	20K	15
Structured Software Systems	Programmer's Toolkit	(830505)	2	9854	50K	27
"	"	"		14123	60K	27
Structured Software Systems	Command File / Memory Mass Storage	B (830325)	1	30377	10K	27
Infotek Systems	PDR-45	C	2	-18759	20K	27
"	"	"		-8537	30K	27

The above 3rd party ROMs can be downloaded here as complete archive: 9845-3rd-Party-ROM-Readouts-171025.zip