Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_30.ADF » F/+HINT2
F/+HINT2
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_30.ADF |
| Filename: | F/+HINT2 |
| Read OK: | ✔ |
| File size: | 0E57 bytes |
| Load address: | 2B204556 |
| Exec address: | 544E4948 |
File contents
This approach is necessary for compatibility with the Electron.
5 A8 - Address line 8 : Input with TTL levels
6 A13 - Address line 13 : Input with TTL levels
7 A12 - Address line 12 : Input with TTL levels
8 PH12 - CPU clock : Input with CMOS levels
This input is the host computer PH12out.
9 -5V - The negative supply voltage
No more than 20mA per cartridge should be drawn from this supply.
10 CSYNC/MADET
On the Electron:
This is a "no connect" on the Electron.
On the Master 128:
This pin has two functions dependant on the position of a link in
the host computer:-
E/nB: this is the default function. It allows hardware in
cartridges to "know" which into which type of computer it is plugged. It
is a direct connection to+0V in the Master 128 and a floating node in the
Electron.
CSYNC - Composite Synchronisation: Input with TTL levels
The system composite vertical and horizontal synchronisation is made
available. It is intended to be used in genlock applications.
11 RNW/READY
This has different functions on the Electron and the Master 128.
On the Electron:
READY - CPU wait state control : Open collector output
When driven low, this line will cause the CPU to extend its cycle
until READY is released. This will only work on Electrons with CMOS CPUs.
With NMOS CPUs it will only work on read cycles.
On the Master 128:
R/W - Data Direction Control : Input with TTL levels
This is the system data buffer direction control. If low, cartridges
are being written to; if high and selected they may drive the bus
during PH12.
12 nNMI - Non maskable interrupt : Open collector output
This signal is connected to the system NMI line. It is active low.
13 nIRQ - Interrupt request : Open collector output
This signal is connected to the system IRQ line. It is active low.
14 nINFC - Internal Page &FC : Memory active decode input : TTL active low
When bit IFJ is set in the Master 128 ACCCON register, all accesses
to the address range &FC00 to
&FCFF will cause this select to become active. The ACCCON access is
not applicable to the Electron.
15 nINFD - Internal page &FD : Memory active decode input : TTL active low
When bit IFJ is set in the Master 128 ACCCON register, all accesses
to the address range &FD00 to
&FDFF will cause this select to become active. The ACCCON access is
not applicable to the Electron.
16 ROMQA - Memory paging select : Input with TTL levels
This is the least significant bit of the ROM select latch located at
&FE30 in the Master 128 and at &FE05 in the Electron.
17 Clock
This connection has different uses in the Electron and Master 128:
In the Electron:
Clock is a 16MHz input with TTL levels.
In the Master 128:
Clock is a strap selectable function:
a) 16MHz input with TTL levels.
b) 8 MHz input with TTL levels.
The functions are selected by links on the host computer. The user
should ensure that the links are correct for a given application and
that proper termination is provided.
18 nROMSTB/nCRTCRST
This has different functions on the Electron and Master 128:
On the Electron:
nROMSTB is an active low input using TTL levels which selects the
location &FC73. This is intended to be used as a paging register.
On the Master 128:
nCRTCRST is an active low output signal meeting TTL levels of the
system CRTC reset input. It is provided for use in genlock
applications.
00000000 0d 20 20 20 20 20 54 68 69 73 20 61 70 70 72 6f |. This appro| 00000010 61 63 68 20 69 73 20 6e 65 63 65 73 73 61 72 79 |ach is necessary| 00000020 20 66 6f 72 20 63 6f 6d 70 61 74 69 62 69 6c 69 | for compatibili| 00000030 74 79 20 77 69 74 68 20 74 68 65 20 45 6c 65 63 |ty with the Elec| 00000040 74 72 6f 6e 2e 0d 0d 35 20 20 20 41 38 20 2d 20 |tron...5 A8 - | 00000050 41 64 64 72 65 73 73 20 6c 69 6e 65 20 38 20 3a |Address line 8 :| 00000060 20 49 6e 70 75 74 20 77 69 74 68 20 54 54 4c 20 | Input with TTL | 00000070 6c 65 76 65 6c 73 0d 0d 36 20 20 20 41 31 33 20 |levels..6 A13 | 00000080 2d 20 41 64 64 72 65 73 73 20 6c 69 6e 65 20 31 |- Address line 1| 00000090 33 20 3a 20 49 6e 70 75 74 20 77 69 74 68 20 54 |3 : Input with T| 000000a0 54 4c 20 6c 65 76 65 6c 73 0d 0d 37 20 20 20 41 |TL levels..7 A| 000000b0 31 32 20 2d 20 41 64 64 72 65 73 73 20 6c 69 6e |12 - Address lin| 000000c0 65 20 31 32 20 3a 20 49 6e 70 75 74 20 77 69 74 |e 12 : Input wit| 000000d0 68 20 54 54 4c 20 6c 65 76 65 6c 73 0d 0d 38 20 |h TTL levels..8 | 000000e0 20 20 50 48 31 32 20 2d 20 43 50 55 20 63 6c 6f | PH12 - CPU clo| 000000f0 63 6b 20 3a 20 49 6e 70 75 74 20 77 69 74 68 20 |ck : Input with | 00000100 43 4d 4f 53 20 6c 65 76 65 6c 73 0d 20 20 20 20 |CMOS levels. | 00000110 20 54 68 69 73 20 69 6e 70 75 74 20 69 73 20 74 | This input is t| 00000120 68 65 20 68 6f 73 74 20 63 6f 6d 70 75 74 65 72 |he host computer| 00000130 20 50 48 31 32 6f 75 74 2e 0d 0d 39 20 20 20 2d | PH12out...9 -| 00000140 35 56 20 2d 20 54 68 65 20 6e 65 67 61 74 69 76 |5V - The negativ| 00000150 65 20 73 75 70 70 6c 79 20 76 6f 6c 74 61 67 65 |e supply voltage| 00000160 0d 20 20 20 20 20 4e 6f 20 6d 6f 72 65 20 74 68 |. No more th| 00000170 61 6e 20 32 30 6d 41 20 70 65 72 20 63 61 72 74 |an 20mA per cart| 00000180 72 69 64 67 65 20 73 68 6f 75 6c 64 20 62 65 20 |ridge should be | 00000190 64 72 61 77 6e 20 66 72 6f 6d 20 74 68 69 73 20 |drawn from this | 000001a0 73 75 70 70 6c 79 2e 0d 0d 31 30 20 20 43 53 59 |supply...10 CSY| 000001b0 4e 43 2f 4d 41 44 45 54 0d 20 20 20 20 20 20 4f |NC/MADET. O| 000001c0 6e 20 74 68 65 20 45 6c 65 63 74 72 6f 6e 3a 0d |n the Electron:.| 000001d0 20 20 20 20 20 20 54 68 69 73 20 69 73 20 61 20 | This is a | 000001e0 22 6e 6f 20 63 6f 6e 6e 65 63 74 22 20 6f 6e 20 |"no connect" on | 000001f0 74 68 65 20 45 6c 65 63 74 72 6f 6e 2e 0d 0d 20 |the Electron... | 00000200 20 20 20 20 20 4f 6e 20 74 68 65 20 4d 61 73 74 | On the Mast| 00000210 65 72 20 31 32 38 3a 0d 20 20 20 20 20 20 54 68 |er 128:. Th| 00000220 69 73 20 70 69 6e 20 68 61 73 20 74 77 6f 20 66 |is pin has two f| 00000230 75 6e 63 74 69 6f 6e 73 20 64 65 70 65 6e 64 61 |unctions dependa| 00000240 6e 74 20 6f 6e 20 74 68 65 20 70 6f 73 69 74 69 |nt on the positi| 00000250 6f 6e 20 6f 66 20 61 20 6c 69 6e 6b 20 69 6e 0d |on of a link in.| 00000260 74 68 65 20 68 6f 73 74 20 63 6f 6d 70 75 74 65 |the host compute| 00000270 72 3a 2d 0d 0d 20 20 20 20 20 20 45 2f 6e 42 3a |r:-.. E/nB:| 00000280 20 20 74 68 69 73 20 69 73 20 74 68 65 20 64 65 | this is the de| 00000290 66 61 75 6c 74 20 66 75 6e 63 74 69 6f 6e 2e 20 |fault function. | 000002a0 20 49 74 20 61 6c 6c 6f 77 73 20 68 61 72 64 77 | It allows hardw| 000002b0 61 72 65 20 69 6e 0d 63 61 72 74 72 69 64 67 65 |are in.cartridge| 000002c0 73 20 74 6f 20 20 22 6b 6e 6f 77 22 20 77 68 69 |s to "know" whi| 000002d0 63 68 20 69 6e 74 6f 20 77 68 69 63 68 20 74 79 |ch into which ty| 000002e0 70 65 20 6f 66 20 63 6f 6d 70 75 74 65 72 20 69 |pe of computer i| 000002f0 74 20 69 73 20 70 6c 75 67 67 65 64 2e 20 20 49 |t is plugged. I| 00000300 74 0d 69 73 20 61 20 64 69 72 65 63 74 20 63 6f |t.is a direct co| 00000310 6e 6e 65 63 74 69 6f 6e 20 74 6f 2b 30 56 20 69 |nnection to+0V i| 00000320 6e 20 74 68 65 20 4d 61 73 74 65 72 20 31 32 38 |n the Master 128| 00000330 20 61 6e 64 20 61 20 66 6c 6f 61 74 69 6e 67 20 | and a floating | 00000340 6e 6f 64 65 20 69 6e 20 74 68 65 0d 45 6c 65 63 |node in the.Elec| 00000350 74 72 6f 6e 2e 0d 0d 20 20 20 20 20 20 43 53 59 |tron... CSY| 00000360 4e 43 20 2d 20 43 6f 6d 70 6f 73 69 74 65 20 53 |NC - Composite S| 00000370 79 6e 63 68 72 6f 6e 69 73 61 74 69 6f 6e 3a 20 |ynchronisation: | 00000380 20 49 6e 70 75 74 20 77 69 74 68 20 54 54 4c 20 | Input with TTL | 00000390 6c 65 76 65 6c 73 0d 20 20 20 20 20 20 54 68 65 |levels. The| 000003a0 20 73 79 73 74 65 6d 20 63 6f 6d 70 6f 73 69 74 | system composit| 000003b0 65 20 76 65 72 74 69 63 61 6c 20 61 6e 64 20 68 |e vertical and h| 000003c0 6f 72 69 7a 6f 6e 74 61 6c 20 73 79 6e 63 68 72 |orizontal synchr| 000003d0 6f 6e 69 73 61 74 69 6f 6e 20 69 73 20 6d 61 64 |onisation is mad| 000003e0 65 0d 61 76 61 69 6c 61 62 6c 65 2e 20 20 49 74 |e.available. It| 000003f0 20 69 73 20 69 6e 74 65 6e 64 65 64 20 74 6f 20 | is intended to | 00000400 62 65 20 75 73 65 64 20 69 6e 20 67 65 6e 6c 6f |be used in genlo| 00000410 63 6b 20 61 70 70 6c 69 63 61 74 69 6f 6e 73 2e |ck applications.| 00000420 20 20 0d 0d 31 31 20 20 52 4e 57 2f 52 45 41 44 | ..11 RNW/READ| 00000430 59 0d 20 20 20 20 20 20 54 68 69 73 20 68 61 73 |Y. This has| 00000440 20 64 69 66 66 65 72 65 6e 74 20 66 75 6e 63 74 | different funct| 00000450 69 6f 6e 73 20 6f 6e 20 74 68 65 20 45 6c 65 63 |ions on the Elec| 00000460 74 72 6f 6e 20 61 6e 64 20 74 68 65 20 4d 61 73 |tron and the Mas| 00000470 74 65 72 20 31 32 38 2e 0d 0d 20 20 20 20 20 20 |ter 128... | 00000480 4f 6e 20 74 68 65 20 45 6c 65 63 74 72 6f 6e 3a |On the Electron:| 00000490 0d 20 20 20 20 20 20 52 45 41 44 59 20 2d 20 43 |. READY - C| 000004a0 50 55 20 77 61 69 74 20 73 74 61 74 65 20 63 6f |PU wait state co| 000004b0 6e 74 72 6f 6c 20 3a 20 4f 70 65 6e 20 63 6f 6c |ntrol : Open col| 000004c0 6c 65 63 74 6f 72 20 6f 75 74 70 75 74 0d 20 20 |lector output. | 000004d0 20 20 20 20 57 68 65 6e 20 64 72 69 76 65 6e 20 | When driven | 000004e0 6c 6f 77 2c 20 74 68 69 73 20 6c 69 6e 65 20 77 |low, this line w| 000004f0 69 6c 6c 20 63 61 75 73 65 20 74 68 65 20 43 50 |ill cause the CP| 00000500 55 20 74 6f 20 65 78 74 65 6e 64 20 69 74 73 20 |U to extend its | 00000510 63 79 63 6c 65 0d 75 6e 74 69 6c 20 52 45 41 44 |cycle.until READ| 00000520 59 20 69 73 20 72 65 6c 65 61 73 65 64 2e 20 20 |Y is released. | 00000530 54 68 69 73 20 77 69 6c 6c 20 6f 6e 6c 79 20 77 |This will only w| 00000540 6f 72 6b 20 6f 6e 20 45 6c 65 63 74 72 6f 6e 73 |ork on Electrons| 00000550 20 77 69 74 68 20 43 4d 4f 53 20 43 50 55 73 2e | with CMOS CPUs.| 00000560 20 0d 57 69 74 68 20 4e 4d 4f 53 20 43 50 55 73 | .With NMOS CPUs| 00000570 20 69 74 20 77 69 6c 6c 20 6f 6e 6c 79 20 77 6f | it will only wo| 00000580 72 6b 20 6f 6e 20 72 65 61 64 20 63 79 63 6c 65 |rk on read cycle| 00000590 73 2e 0d 0d 20 20 20 20 20 20 4f 6e 20 74 68 65 |s... On the| 000005a0 20 4d 61 73 74 65 72 20 31 32 38 3a 0d 20 20 20 | Master 128:. | 000005b0 20 20 20 52 2f 57 20 2d 20 44 61 74 61 20 44 69 | R/W - Data Di| 000005c0 72 65 63 74 69 6f 6e 20 43 6f 6e 74 72 6f 6c 20 |rection Control | 000005d0 3a 20 49 6e 70 75 74 20 77 69 74 68 20 54 54 4c |: Input with TTL| 000005e0 20 6c 65 76 65 6c 73 0d 20 20 20 20 20 54 68 69 | levels. Thi| 000005f0 73 20 69 73 20 74 68 65 20 73 79 73 74 65 6d 20 |s is the system | 00000600 64 61 74 61 20 62 75 66 66 65 72 20 64 69 72 65 |data buffer dire| 00000610 63 74 69 6f 6e 20 63 6f 6e 74 72 6f 6c 2e 20 20 |ction control. | 00000620 49 66 20 6c 6f 77 2c 20 63 61 72 74 72 69 64 67 |If low, cartridg| 00000630 65 73 0d 20 20 20 20 20 61 72 65 20 62 65 69 6e |es. are bein| 00000640 67 20 77 72 69 74 74 65 6e 20 74 6f 3b 20 69 66 |g written to; if| 00000650 20 68 69 67 68 20 61 6e 64 20 73 65 6c 65 63 74 | high and select| 00000660 65 64 20 74 68 65 79 20 6d 61 79 20 64 72 69 76 |ed they may driv| 00000670 65 20 74 68 65 20 62 75 73 20 0d 20 20 20 20 20 |e the bus . | 00000680 64 75 72 69 6e 67 20 20 50 48 31 32 2e 0d 0d 31 |during PH12...1| 00000690 32 20 20 6e 4e 4d 49 20 2d 20 4e 6f 6e 20 6d 61 |2 nNMI - Non ma| 000006a0 73 6b 61 62 6c 65 20 69 6e 74 65 72 72 75 70 74 |skable interrupt| 000006b0 20 3a 20 4f 70 65 6e 20 63 6f 6c 6c 65 63 74 6f | : Open collecto| 000006c0 72 20 6f 75 74 70 75 74 0d 20 20 20 20 20 20 54 |r output. T| 000006d0 68 69 73 20 73 69 67 6e 61 6c 20 69 73 20 63 6f |his signal is co| 000006e0 6e 6e 65 63 74 65 64 20 74 6f 20 74 68 65 20 73 |nnected to the s| 000006f0 79 73 74 65 6d 20 4e 4d 49 20 6c 69 6e 65 2e 20 |ystem NMI line. | 00000700 20 49 74 20 69 73 20 61 63 74 69 76 65 20 6c 6f | It is active lo| 00000710 77 2e 0d 0d 31 33 20 20 6e 49 52 51 20 2d 20 49 |w...13 nIRQ - I| 00000720 6e 74 65 72 72 75 70 74 20 72 65 71 75 65 73 74 |nterrupt request| 00000730 20 3a 20 4f 70 65 6e 20 63 6f 6c 6c 65 63 74 6f | : Open collecto| 00000740 72 20 6f 75 74 70 75 74 0d 20 20 20 20 20 20 54 |r output. T| 00000750 68 69 73 20 73 69 67 6e 61 6c 20 69 73 20 63 6f |his signal is co| 00000760 6e 6e 65 63 74 65 64 20 74 6f 20 74 68 65 20 73 |nnected to the s| 00000770 79 73 74 65 6d 20 49 52 51 20 6c 69 6e 65 2e 20 |ystem IRQ line. | 00000780 20 49 74 20 69 73 20 61 63 74 69 76 65 20 6c 6f | It is active lo| 00000790 77 2e 0d 0d 31 34 20 20 6e 49 4e 46 43 20 2d 20 |w...14 nINFC - | 000007a0 49 6e 74 65 72 6e 61 6c 20 50 61 67 65 20 26 46 |Internal Page &F| 000007b0 43 20 3a 20 4d 65 6d 6f 72 79 20 61 63 74 69 76 |C : Memory activ| 000007c0 65 20 64 65 63 6f 64 65 20 69 6e 70 75 74 20 3a |e decode input :| 000007d0 20 54 54 4c 20 61 63 74 69 76 65 20 6c 6f 77 0d | TTL active low.| 000007e0 20 20 20 20 20 20 57 68 65 6e 20 62 69 74 20 49 | When bit I| 000007f0 46 4a 20 69 73 20 73 65 74 20 69 6e 20 74 68 65 |FJ is set in the| 00000800 20 4d 61 73 74 65 72 20 31 32 38 20 41 43 43 43 | Master 128 ACCC| 00000810 4f 4e 20 72 65 67 69 73 74 65 72 2c 20 61 6c 6c |ON register, all| 00000820 20 61 63 63 65 73 73 65 73 0d 20 20 20 20 20 20 | accesses. | 00000830 74 6f 20 74 68 65 20 61 64 64 72 65 73 73 20 72 |to the address r| 00000840 61 6e 67 65 20 26 46 43 30 30 20 74 6f 0d 20 20 |ange &FC00 to. | 00000850 20 20 20 20 26 46 43 46 46 20 77 69 6c 6c 20 63 | &FCFF will c| 00000860 61 75 73 65 20 74 68 69 73 20 73 65 6c 65 63 74 |ause this select| 00000870 20 74 6f 20 62 65 63 6f 6d 65 20 61 63 74 69 76 | to become activ| 00000880 65 2e 20 20 54 68 65 20 41 43 43 43 4f 4e 20 61 |e. The ACCCON a| 00000890 63 63 65 73 73 20 69 73 0d 20 20 20 20 20 20 6e |ccess is. n| 000008a0 6f 74 20 61 70 70 6c 69 63 61 62 6c 65 20 74 6f |ot applicable to| 000008b0 20 74 68 65 20 45 6c 65 63 74 72 6f 6e 2e 0d 0d | the Electron...| 000008c0 31 35 20 20 6e 49 4e 46 44 20 2d 20 49 6e 74 65 |15 nINFD - Inte| 000008d0 72 6e 61 6c 20 70 61 67 65 20 26 46 44 20 3a 20 |rnal page &FD : | 000008e0 4d 65 6d 6f 72 79 20 61 63 74 69 76 65 20 64 65 |Memory active de| 000008f0 63 6f 64 65 20 69 6e 70 75 74 20 3a 20 54 54 4c |code input : TTL| 00000900 20 61 63 74 69 76 65 20 6c 6f 77 0d 20 20 20 20 | active low. | 00000910 20 20 57 68 65 6e 20 62 69 74 20 49 46 4a 20 69 | When bit IFJ i| 00000920 73 20 73 65 74 20 69 6e 20 74 68 65 20 4d 61 73 |s set in the Mas| 00000930 74 65 72 20 31 32 38 20 41 43 43 43 4f 4e 20 72 |ter 128 ACCCON r| 00000940 65 67 69 73 74 65 72 2c 20 61 6c 6c 20 61 63 63 |egister, all acc| 00000950 65 73 73 65 73 0d 20 20 20 20 20 20 74 6f 20 74 |esses. to t| 00000960 68 65 20 61 64 64 72 65 73 73 20 72 61 6e 67 65 |he address range| 00000970 20 26 46 44 30 30 20 74 6f 0d 20 20 20 20 20 20 | &FD00 to. | 00000980 26 46 44 46 46 20 77 69 6c 6c 20 63 61 75 73 65 |&FDFF will cause| 00000990 20 74 68 69 73 20 73 65 6c 65 63 74 20 74 6f 20 | this select to | 000009a0 62 65 63 6f 6d 65 20 61 63 74 69 76 65 2e 20 20 |become active. | 000009b0 54 68 65 20 41 43 43 43 4f 4e 20 61 63 63 65 73 |The ACCCON acces| 000009c0 73 20 69 73 0d 20 20 20 20 20 20 6e 6f 74 20 61 |s is. not a| 000009d0 70 70 6c 69 63 61 62 6c 65 20 74 6f 20 74 68 65 |pplicable to the| 000009e0 20 45 6c 65 63 74 72 6f 6e 2e 0d 0d 31 36 20 20 | Electron...16 | 000009f0 52 4f 4d 51 41 20 2d 20 4d 65 6d 6f 72 79 20 70 |ROMQA - Memory p| 00000a00 61 67 69 6e 67 20 73 65 6c 65 63 74 20 3a 20 49 |aging select : I| 00000a10 6e 70 75 74 20 77 69 74 68 20 54 54 4c 20 6c 65 |nput with TTL le| 00000a20 76 65 6c 73 0d 20 20 20 20 20 20 54 68 69 73 20 |vels. This | 00000a30 69 73 20 74 68 65 20 6c 65 61 73 74 20 73 69 67 |is the least sig| 00000a40 6e 69 66 69 63 61 6e 74 20 62 69 74 20 6f 66 20 |nificant bit of | 00000a50 74 68 65 20 52 4f 4d 20 73 65 6c 65 63 74 20 6c |the ROM select l| 00000a60 61 74 63 68 20 6c 6f 63 61 74 65 64 20 61 74 0d |atch located at.| 00000a70 20 20 20 20 20 20 26 46 45 33 30 20 69 6e 20 74 | &FE30 in t| 00000a80 68 65 20 4d 61 73 74 65 72 20 31 32 38 20 61 6e |he Master 128 an| 00000a90 64 20 61 74 20 26 46 45 30 35 20 69 6e 20 74 68 |d at &FE05 in th| 00000aa0 65 20 45 6c 65 63 74 72 6f 6e 2e 0d 0d 31 37 20 |e Electron...17 | 00000ab0 20 43 6c 6f 63 6b 0d 20 20 20 20 20 20 54 68 69 | Clock. Thi| 00000ac0 73 20 20 63 6f 6e 6e 65 63 74 69 6f 6e 20 68 61 |s connection ha| 00000ad0 73 20 64 69 66 66 65 72 65 6e 74 20 75 73 65 73 |s different uses| 00000ae0 20 69 6e 20 74 68 65 20 45 6c 65 63 74 72 6f 6e | in the Electron| 00000af0 20 61 6e 64 20 4d 61 73 74 65 72 20 31 32 38 3a | and Master 128:| 00000b00 0d 0d 20 20 20 20 20 20 49 6e 20 74 68 65 20 45 |.. In the E| 00000b10 6c 65 63 74 72 6f 6e 3a 0d 20 20 20 20 20 20 43 |lectron:. C| 00000b20 6c 6f 63 6b 20 69 73 20 61 20 31 36 4d 48 7a 20 |lock is a 16MHz | 00000b30 69 6e 70 75 74 20 77 69 74 68 20 54 54 4c 20 6c |input with TTL l| 00000b40 65 76 65 6c 73 2e 0d 0d 20 20 20 20 20 20 49 6e |evels... In| 00000b50 20 74 68 65 20 4d 61 73 74 65 72 20 31 32 38 3a | the Master 128:| 00000b60 0d 20 20 20 20 20 20 43 6c 6f 63 6b 20 69 73 20 |. Clock is | 00000b70 61 20 73 74 72 61 70 20 73 65 6c 65 63 74 61 62 |a strap selectab| 00000b80 6c 65 20 66 75 6e 63 74 69 6f 6e 3a 0d 20 20 20 |le function:. | 00000b90 20 20 20 61 29 20 20 31 36 4d 48 7a 20 69 6e 70 | a) 16MHz inp| 00000ba0 75 74 20 77 69 74 68 20 54 54 4c 20 6c 65 76 65 |ut with TTL leve| 00000bb0 6c 73 2e 0d 20 20 20 20 20 20 62 29 20 20 38 20 |ls.. b) 8 | 00000bc0 4d 48 7a 20 69 6e 70 75 74 20 77 69 74 68 20 54 |MHz input with T| 00000bd0 54 4c 20 6c 65 76 65 6c 73 2e 0d 20 20 20 20 20 |TL levels.. | 00000be0 20 54 68 65 20 66 75 6e 63 74 69 6f 6e 73 20 61 | The functions a| 00000bf0 72 65 20 73 65 6c 65 63 74 65 64 20 62 79 20 6c |re selected by l| 00000c00 69 6e 6b 73 20 6f 6e 20 74 68 65 20 68 6f 73 74 |inks on the host| 00000c10 20 63 6f 6d 70 75 74 65 72 2e 20 20 54 68 65 20 | computer. The | 00000c20 75 73 65 72 0d 20 20 20 20 20 20 73 68 6f 75 6c |user. shoul| 00000c30 64 20 65 6e 73 75 72 65 20 74 68 61 74 20 74 68 |d ensure that th| 00000c40 65 20 6c 69 6e 6b 73 20 61 72 65 20 63 6f 72 72 |e links are corr| 00000c50 65 63 74 20 66 6f 72 20 61 20 67 69 76 65 6e 20 |ect for a given | 00000c60 61 70 70 6c 69 63 61 74 69 6f 6e 20 61 6e 64 0d |application and.| 00000c70 20 20 20 20 20 74 68 61 74 20 70 72 6f 70 65 72 | that proper| 00000c80 20 74 65 72 6d 69 6e 61 74 69 6f 6e 20 69 73 20 | termination is | 00000c90 70 72 6f 76 69 64 65 64 2e 0d 0d 31 38 20 20 6e |provided...18 n| 00000ca0 52 4f 4d 53 54 42 2f 6e 43 52 54 43 52 53 54 0d |ROMSTB/nCRTCRST.| 00000cb0 20 20 20 20 20 20 54 68 69 73 20 68 61 73 20 64 | This has d| 00000cc0 69 66 66 65 72 65 6e 74 20 66 75 6e 63 74 69 6f |ifferent functio| 00000cd0 6e 73 20 6f 6e 20 74 68 65 20 45 6c 65 63 74 72 |ns on the Electr| 00000ce0 6f 6e 20 61 6e 64 20 4d 61 73 74 65 72 20 31 32 |on and Master 12| 00000cf0 38 3a 0d 0d 20 20 20 20 20 20 4f 6e 20 74 68 65 |8:.. On the| 00000d00 20 45 6c 65 63 74 72 6f 6e 3a 0d 20 20 20 20 20 | Electron:. | 00000d10 20 6e 52 4f 4d 53 54 42 20 69 73 20 61 6e 20 61 | nROMSTB is an a| 00000d20 63 74 69 76 65 20 6c 6f 77 20 69 6e 70 75 74 20 |ctive low input | 00000d30 75 73 69 6e 67 20 54 54 4c 20 6c 65 76 65 6c 73 |using TTL levels| 00000d40 20 77 68 69 63 68 20 73 65 6c 65 63 74 73 20 74 | which selects t| 00000d50 68 65 0d 20 20 20 20 20 20 6c 6f 63 61 74 69 6f |he. locatio| 00000d60 6e 20 26 46 43 37 33 2e 20 20 54 68 69 73 20 69 |n &FC73. This i| 00000d70 73 20 69 6e 74 65 6e 64 65 64 20 74 6f 20 62 65 |s intended to be| 00000d80 20 75 73 65 64 20 61 73 20 61 20 70 61 67 69 6e | used as a pagin| 00000d90 67 20 72 65 67 69 73 74 65 72 2e 0d 0d 20 20 20 |g register... | 00000da0 20 20 20 4f 6e 20 74 68 65 20 4d 61 73 74 65 72 | On the Master| 00000db0 20 31 32 38 3a 0d 20 20 20 20 20 20 6e 43 52 54 | 128:. nCRT| 00000dc0 43 52 53 54 20 69 73 20 61 6e 20 61 63 74 69 76 |CRST is an activ| 00000dd0 65 20 6c 6f 77 20 6f 75 74 70 75 74 20 73 69 67 |e low output sig| 00000de0 6e 61 6c 20 6d 65 65 74 69 6e 67 20 54 54 4c 20 |nal meeting TTL | 00000df0 6c 65 76 65 6c 73 20 6f 66 20 74 68 65 0d 20 20 |levels of the. | 00000e00 20 20 20 20 73 79 73 74 65 6d 20 43 52 54 43 20 | system CRTC | 00000e10 72 65 73 65 74 20 69 6e 70 75 74 2e 20 20 49 74 |reset input. It| 00000e20 20 69 73 20 70 72 6f 76 69 64 65 64 20 66 6f 72 | is provided for| 00000e30 20 75 73 65 20 69 6e 20 67 65 6e 6c 6f 63 6b 0d | use in genlock.| 00000e40 20 20 20 20 20 20 61 70 70 6c 69 63 61 74 69 6f | applicatio| 00000e50 6e 73 2e 0d 0d 0d 0d |ns.....| 00000e57
F/+HINT2.m0
F/+HINT2.m1
F/+HINT2.m2
F/+HINT2.m4
F/+HINT2.m5
.