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ACME_Lib: a bit more info on CIAs and VIC
git-svn-id: https://svn.code.sf.net/p/acme-crossass/code-0/trunk@114 4df02467-bbd4-4a76-a152-e7ce94205b78
This commit is contained in:
marcobaye
parent
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commit
81f2d3f683
@ -1,19 +1,22 @@
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;ACME 0.95
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;ACME 0.96.4
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!ifdef lib_cbm_c128_vic_a !eof
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lib_cbm_c128_vic_a = 1
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!source <cbm/c64/vic.a> ; registers 0..2e
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!address {
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; registers only present in the C128 variant of this chip:
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vic_keyboard = $d02f
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vic_clock = $d030
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vic_keyboard = vic_base + $2f
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; %76543... always set
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; %.....210 output pins for extended keyboard layout
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vic_clock = vic_base + $30
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; %765432.. always set
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; %......1. "test" bit: 0 = normal, 1 = system clock changes raster line
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; %.......0 system clock: 0 = 1 MHz, 1 = 2 MHz (VIC bus cycles will be given to CPU instead)
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; the c128 ROMs contain two copies of a look-up table to convert vic color
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; values to their corresponding petscii color codes:
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; rom4_* needs "low rom area" enabled ($4000..$7fff)
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; romc_* needs "high rom area" enabled ($c000..$ffff)
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rom4_vic_to_petscii_color_table = $76b5 ; 90 05 1c 9f 9c 1e 1f 9e 81 95 96 97 98 99 9a 9b
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romc_vic_to_petscii_color_table = $ce4c ; 90 05 1c 9f 9c 1e 1f 9e 81 95 96 97 98 99 9a 9b
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}
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!addr rom4_vic_to_petscii_color_table = $76b5 ; 90 05 1c 9f 9c 1e 1f 9e 81 95 96 97 98 99 9a 9b
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!addr romc_vic_to_petscii_color_table = $ce4c ; 90 05 1c 9f 9c 1e 1f 9e 81 95 96 97 98 99 9a 9b
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@ -1,23 +1,27 @@
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;ACME 0.95
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;ACME 0.96.4
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!ifdef lib_cbm_c64_cia1_a !eof
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lib_cbm_c64_cia1_a = 1
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!address {
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cia1_pra = $dc00
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cia1_prb = $dc01
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cia1_ddra = $dc02
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cia1_ddrb = $dc03
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cia1_ta_lo = $dc04
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cia1_ta_hi = $dc05
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cia1_tb_lo = $dc06
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cia1_tb_hi = $dc07
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cia1_tod10ths = $dc08
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cia1_todsec = $dc09
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cia1_todmin = $dc0a
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cia1_todhr = $dc0b
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cia1_sdr = $dc0c
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cia1_icr = $dc0d
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cia1_cra = $dc0e
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cia1_crb = $dc0f
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}
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!source <cbm/cia.a> ; chip stuff (same for both cias)
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; stuff for cia 1 only:
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!addr cia1_base = $dc00
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cia1_pra = cia1_base + cia_port_a ; PA0..PA4 are joy port 2 PA6+PA7 select paddle port(s)
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cia1_prb = cia1_base + cia_port_b ; PB0..PB4 are joy port 1
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; both ports are used for keyboard matrix
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cia1_ddra = cia1_base + cia_data_direction_a
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cia1_ddrb = cia1_base + cia_data_direction_b
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cia1_ta_lo = cia1_base + cia_timer_a_low
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cia1_ta_hi = cia1_base + cia_timer_a_high
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cia1_tb_lo = cia1_base + cia_timer_b_low
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cia1_tb_hi = cia1_base + cia_timer_b_high
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cia1_tod10ths = cia1_base + cia_timeofday_10ths
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cia1_todsec = cia1_base + cia_timeofday_seconds
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cia1_todmin = cia1_base + cia_timeofday_minutes
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cia1_todhr = cia1_base + cia_timeofday_hours
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cia1_sdr = cia1_base + cia_serial_data
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cia1_icr = cia1_base + cia_interrupt_control
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cia1_cra = cia1_base + cia_control_a
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cia1_crb = cia1_base + cia_control_b
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; the interrupt output is connected to CPU's /IRQ input
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; in the C128, the shift register is used for the fast serial port (burst mode)
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@ -1,30 +1,32 @@
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;ACME 0.95
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;ACME 0.96.4
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!ifdef lib_cbm_c64_cia2_a !eof
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lib_cbm_c64_cia2_a = 1
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!address {
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cia2_pra = $dd00
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!source <cbm/cia.a> ; chip stuff (same for both cias)
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; stuff for cia 2 only:
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!addr cia2_base = $dd00
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cia2_pra = cia2_base + cia_port_a
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; %7....... DATA in (0 means GND)
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; %.6...... CLK in (0 means GND)
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; %..5..... DATA out (inverted, 1 means GND)
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; %...4.... CLK out (inverted, 1 means GND)
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; %....3... ATN out (inverted, 1 means GND)
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; %.....2.. PA2 (pin M at user port, 0 means GND)
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; %......10 VIC bank (inverted, so value $3 means address $0000)
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cia2_prb = $dd01
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cia2_ddra = $dd02
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cia2_ddrb = $dd03
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cia2_ta_lo = $dd04
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cia2_ta_hi = $dd05
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cia2_tb_lo = $dd06
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cia2_tb_hi = $dd07
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cia2_tod10ths = $dd08
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cia2_todsec = $dd09
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cia2_todmin = $dd0a
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cia2_todhr = $dd0b
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cia2_sdr = $dd0c
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cia2_icr = $dd0d
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cia2_cra = $dd0e
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cia2_crb = $dd0f
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}
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; %......10 VIC bank (inverted, so value %11 means address $0000)
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cia2_prb = cia2_base + cia_port_b
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cia2_ddra = cia2_base + cia_data_direction_a
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cia2_ddrb = cia2_base + cia_data_direction_b
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cia2_ta_lo = cia2_base + cia_timer_a_low
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cia2_ta_hi = cia2_base + cia_timer_a_high
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cia2_tb_lo = cia2_base + cia_timer_b_low
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cia2_tb_hi = cia2_base + cia_timer_b_high
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cia2_tod10ths = cia2_base + cia_timeofday_10ths
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cia2_todsec = cia2_base + cia_timeofday_seconds
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cia2_todmin = cia2_base + cia_timeofday_minutes
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cia2_todhr = cia2_base + cia_timeofday_hours
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cia2_sdr = cia2_base + cia_serial_data
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cia2_icr = cia2_base + cia_interrupt_control
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cia2_cra = cia2_base + cia_control_a
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cia2_crb = cia2_base + cia_control_b
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; the interrupt output is connected to CPU's /NMI input
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@ -1,8 +1,25 @@
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;ACME 0.95
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;ACME 0.96.4
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!ifdef lib_cbm_c64_vic_a !eof
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lib_cbm_c64_vic_a = 1
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; This is from Christian Bauer's VIC text: {
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; 6566: designed for static RAM, never used in C64/128
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; 6567/8562: C64, NTSC
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; 6569/8565: C64, PAL
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; 6572: Drean C64, PAL-N
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; 8564: C128, NTSC
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; 8566: C128, PAL
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; PAL chips generate 312 lines with 63 cycles per line.
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; PAL-N chips generate 312 lines with 65 cycles per line.
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; NTSC chips generate 263 lines with 65 cycles per line.
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; Very early NTSC chips (6567R56A) have an off-by-one
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; error, they generate 262 lines with 64 cycles per line.
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; }
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; The c128 version is officially called "VIC-IIe".
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; It has two additional registers and more pins.
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; color codes
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viccolor_BLACK = $0
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viccolor_WHITE = $1
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@ -21,58 +38,85 @@ viccolor_LGREEN = $d
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viccolor_LBLUE = $e
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viccolor_GRAY3 = $f
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!address {
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; register addresses
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vic_xs0 = $d000
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vic_ys0 = $d001
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vic_xs1 = $d002
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vic_ys1 = $d003
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vic_xs2 = $d004
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vic_ys2 = $d005
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vic_xs3 = $d006
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vic_ys3 = $d007
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vic_xs4 = $d008
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vic_ys4 = $d009
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vic_xs5 = $d00a
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vic_ys5 = $d00b
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vic_xs6 = $d00c
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vic_ys6 = $d00d
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vic_xs7 = $d00e
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vic_ys7 = $d00f
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vic_msb_xs = $d010
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vic_controlv = $d011 ; vertical control (and much other stuff)
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vic_line = $d012 ; raster line
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vic_xlp = $d013 ; light pen coordinates
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vic_ylp = $d014
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vic_sactive = $d015 ; sprites: active
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vic_controlh = $d016 ; horizontal control (and much other stuff)
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vic_sdy = $d017 ; sprites: double height
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vic_ram = $d018 ; RAM pointer
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vic_irq = $d019
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vic_irqmask = $d01a
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vic_sback = $d01b ; sprites: background mode
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vic_smc = $d01c ; sprites: multi color mode
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vic_sdx = $d01d ; sprites: double width
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vic_ss_collided = $d01e ; sprite-sprite collision detect
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vic_sd_collided = $d01f ; sprite-data collision detect
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; color registers
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vic_cborder = $d020 ; border color
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vic_cbg = $d021 ; general background color
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vic_cbg0 = $d021
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vic_cbg1 = $d022 ; background color 1 (for EBC and MC text mode)
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vic_cbg2 = $d023 ; background color 2 (for EBC and MC text mode)
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vic_cbg3 = $d024 ; background color 3 (for EBC mode)
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vic_sc01 = $d025 ; sprite color for MC-bitpattern %01
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vic_sc11 = $d026 ; sprite color for MC-bitpattern %11
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vic_cs0 = $d027 ; individual sprite colors
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vic_cs1 = $d028 ; (in MC mode, these are used
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vic_cs2 = $d029 ; for bit pattern %10)
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vic_cs3 = $d02a
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vic_cs4 = $d02b
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vic_cs5 = $d02c
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vic_cs6 = $d02d
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vic_cs7 = $d02e
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}
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!addr vic_base = $d000
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; sprite coordinates:
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vic_xs0 = vic_base + $00
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vic_ys0 = vic_base + $01
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vic_xs1 = vic_base + $02
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vic_ys1 = vic_base + $03
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vic_xs2 = vic_base + $04
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vic_ys2 = vic_base + $05
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vic_xs3 = vic_base + $06
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vic_ys3 = vic_base + $07
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vic_xs4 = vic_base + $08
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vic_ys4 = vic_base + $09
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vic_xs5 = vic_base + $0a
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vic_ys5 = vic_base + $0b
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vic_xs6 = vic_base + $0c
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vic_ys6 = vic_base + $0d
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vic_xs7 = vic_base + $0e
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vic_ys7 = vic_base + $0f
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vic_msb_xs = vic_base + $10 ; bit 8 of x position (one bit per sprite)
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vic_controlv = vic_base + $11 ; vertical control and other stuff:
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; %7....... "bit 8" of $d012
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; %.6...... extended background color mode (1=on)
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; %..5..... 0 = text mode, 1 = bitmap mode
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; %...4.... display enable: 0 = disable (border only), 1 = enable VIC only checks this once per frame!
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; %....3... lines: 0 = 24, 1 = 25 ; if set, upper and lower border gain 4 pixels each
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; %.....210 vertical smooth scroll (default %011), screen contents are moved down by this amount
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vic_line = vic_base + $12 ; raster line (also see bit 7 of $d011) reading returns current value, writing sets interrupt value
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vic_xlp = vic_base + $13 ; light pen coordinates, x (only half the resolution)
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vic_ylp = vic_base + $14 ; light pen coordinates, y
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vic_sactive = vic_base + $15 ; sprite enable (one bit per sprite)
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vic_controlh = vic_base + $16 ; horizontal control and other stuff:
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; %76...... always set
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; %..5..... "test", should be 0
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; %...4.... 0 = hires, 1 = multicolor
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; %....3... columns: 0 = 38, 1 = 40 ; if set, left border gains 7 pixels and right border gains 9 pixels
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; %.....210 horizontal smooth scroll (default %000), screen contents are moved to the right by this amount
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vic_sdy = vic_base + $17 ; sprites, double height (one bit per sprite)
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vic_ram = vic_base + $18 ; RAM pointer
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; %7654.... which K of VIC bank is video ram (default %0001)
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; %....321. text: which 2K of VIC bank is character set (default %010)
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; %.......0 text: unused
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; %....3... bitmap: which 8K of VIC bank is bitmap
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; %.....210 bitmap: unused
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vic_irq = vic_base + $19 ; writing back acknowledges!
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; %7....... 1: VIC requested interrupt
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; %.654.... always set
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; %....3... 1: light pen active
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; %.....2.. 1: sprite-sprite collision
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; %......1. 1: sprite-data collision
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; %.......0 1: raster interrupt
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vic_irqmask = vic_base + $1a
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; %7654.... always set
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; %....3... 1: enable lightpen interrupt
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; %.....2.. 1: enable sprite-sprite collision interrupt
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; %......1. 1: enable sprite-data collision interrupt
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; %.......0 1: enable raster interrupt
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vic_sback = vic_base + $1b ; sprites, background (one bit per sprite)
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vic_smc = vic_base + $1c ; sprites, multicolor (one bit per sprite)
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vic_sdx = vic_base + $1d ; sprites, double width (one bit per sprite)
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vic_ss_collided = vic_base + $1e ; sprites, sprite collision (one bit per sprite) reading clears register!
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vic_sd_collided = vic_base + $1f ; sprites, data collision (one bit per sprite) reading clears register!
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; color registers (high nibbles are always %1111):
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vic_cborder = vic_base + $20 ; border color
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vic_cbg = vic_base + $21 ; general background color
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vic_cbg0 = vic_base + $21
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vic_cbg1 = vic_base + $22 ; background color 1 (for EBC and MC text mode)
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vic_cbg2 = vic_base + $23 ; background color 2 (for EBC and MC text mode)
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vic_cbg3 = vic_base + $24 ; background color 3 (for EBC mode)
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vic_sc01 = vic_base + $25 ; sprite color for MC-bitpattern %01
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vic_sc11 = vic_base + $26 ; sprite color for MC-bitpattern %11
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; individual sprite colors (in MC mode, these are used for bit pattern %10):
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vic_cs0 = vic_base + $27 ; sprite 0 color
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vic_cs1 = vic_base + $28 ; sprite 1 color
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vic_cs2 = vic_base + $29 ; sprite 2 color
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vic_cs3 = vic_base + $2a ; sprite 3 color
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vic_cs4 = vic_base + $2b ; sprite 4 color
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vic_cs5 = vic_base + $2c ; sprite 5 color
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vic_cs6 = vic_base + $2d ; sprite 6 color
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vic_cs7 = vic_base + $2e ; sprite 7 color
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; See <cbm/c128/vic.a> for the C128's two additional registers at $d02f/$d030.
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; They are accessible even in C64 mode and $d030 can garble the video output,
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; so be careful not to write to it accidentally in a C64 program!
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109
ACME_Lib/cbm/cia.a
Normal file
109
ACME_Lib/cbm/cia.a
Normal file
@ -0,0 +1,109 @@
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;ACME 0.96.4
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!ifdef lib_cbm_cia_a !eof
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lib_cbm_cia_a = 1
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; CBM's "complex interface adapter" chip, known as 6526.
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; A newer version of this chip was initially called 8521, but later the name was
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; changed back to 6526 again.
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; There are two of these in a C64/128 computer, and one in 1570/1571 drives.
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; pinout:
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; ____ ____
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; | V |
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; GND | 1 40 | cnt clock for shift register
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; / pa0 | 2 39 | sp data for shift register
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; | pa1 | 3 38 | a0 \
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; | pa2 | 4 37 | a1 |_ address
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; Port _| pa3 | 5 36 | a2 | bus
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; A | pa4 | 6 35 | a3 /
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; | pa5 | 7 34 | /reset
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; | pa6 | 8 33 | d0 \
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; \ pa7 | 9 32 | d1 |
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; / pb0 | 10 31 | d2 |
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; | pb1 | 11 30 | d3 |_ data
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; | pb2 | 12 29 | d4 | bus
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; Port _| pb3 | 13 28 | d5 |
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; B | pb4 | 14 27 | d6 |
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; | pb5 | 15 26 | d7 /
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; | pb6 | 16 25 | 0in clock
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; \ pb7 | 17 24 | /flag
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; /pc | 18 23 | /cs chip select
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; tod_clk | 19 22 | r/w
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; +5V | 20 21 | /irq
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; |_________|
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; register offsets:
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; two 8-bit ports:
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cia_port_a = $0
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cia_port_b = $1
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cia_data_direction_a = $2 ; clear means input,
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cia_data_direction_b = $3 ; set means output
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; two 16-bit timers, can be combined to form a single 32-bit timer:
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cia_timer_a_low = $4
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cia_timer_a_high = $5
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cia_timer_b_low = $6
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cia_timer_b_high = $7
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; reading returns current counter value,
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; writing sets start value.
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; in 32-bit mode, timer A is "low word" and timer B is "high word".
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; TOD (time of day) clock, clocked with 50 or 60 Hz:
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; (CAUTION, registers use binary coded decimal format)
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cia_timeofday_10ths = $8 ; %....3210 0..9, counts 10ths of seconds
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cia_timeofday_seconds = $9 ; %.6543210 0..59, as two BCD digits:
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; %.654.... 0..5 "tens"
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; %....3210 0..9 "ones"
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cia_timeofday_minutes = $a ; %.6543210 0..59, as two BCD digits:
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; %.654.... 0..5 "tens"
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; %....3210 0..9 "ones"
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cia_timeofday_hours = $b ; %7..43210 AM/PM and 1..12 as two BCD digits:
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; %7....... 0 means AM, 1 means PM
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; %...4.... 0..1 "tens"
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; %....3210 0..9 "ones"
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; when reading or writing time, start with hours and end with 10ths:
|
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; accessing hours uncouples registers from clock, accessing 10ths re-couples them.
|
||||
; if your read access does not start with the hours register,
|
||||
; you have a race condition!
|
||||
|
||||
; shift register:
|
||||
; msb is sent/received first. send clock is half of timer A's underflow rate.
|
||||
cia_serial_data = $c
|
||||
|
||||
; control registers:
|
||||
cia_interrupt_control = $d
|
||||
; %7....... read: 1 = interrupt requested
|
||||
; write: 0 = disable interrupts indicated by set bits
|
||||
; 1 = enable interrupts indicated by set bits
|
||||
; %.65..... unused
|
||||
; %...4.... negative edge on /flag detected
|
||||
; %....3... shift register has finished sending or receiving
|
||||
; %.....2.. time of day alarm
|
||||
; %......1. timer B underflow
|
||||
; %.......0 timer A underflow
|
||||
|
||||
cia_control_a = $e
|
||||
; %7....... TOD clock: 0 means 60 Hz, 1 means 50 Hz
|
||||
; %.6...... shift register direction: 0 = input, 1 = output
|
||||
; %..5..... timer A clock: 0 = system clock, 1 = CNT
|
||||
; %...4.... 1 = force load timer start value
|
||||
; %....3... timer mode: 0 = continuous, 1 = one-shot (needs restart via bit 0)
|
||||
; %.....2.. 0 = pulse on PB6, 1 = invert PB6
|
||||
; %......1. 1 = timer underflow shows on PB6 (this forces PB6 to output)
|
||||
; %.......0 0 stops timer, 1 starts timer
|
||||
|
||||
cia_control_b = $f
|
||||
; %7....... TOD write mode: 0 = actual time, 1 = alarm time (it is not possible to _read_ the alarm time!)
|
||||
; %.65..... timer B clock:
|
||||
; %00 = system clock
|
||||
; %01 = CNT
|
||||
; %10 = underflow of timer A
|
||||
; %11 = combination of %01 and %10
|
||||
; %...4.... 1 = force load timer start value
|
||||
; %....3... timer mode: 0 = continuous, 1 = one-shot (needs restart via bit 0)
|
||||
; %.....2.. 0 = pulse on PB7, 1 = invert PB7
|
||||
; %......1. 1 = timer underflow shows on PB7 (this forces PB7 to output)
|
||||
; %.......0 0 stops timer, 1 starts timer
|
||||
Loading…
Reference in New Issue
Block a user